Photographs
Absorption chamber (for nitrogen oxides) with casing removed to show the arrangement of shelves and rabbles with apparatus.
Acetylene Welder J. J. Connor at the Fixed Nitrogen Research Laboratory.
Aerial photo of the U.S. Department of Agriculture building in Washington, D.C.
Aerial photo of the U.S. Department of Agriculture building in Washington, D.C. The rear of the south building is in the foreground; in the background are the incomplete administration building and east and west wings with connecting archways.
Aerial View of Lithium-Brine Evaporation Panels
Aerial view of lithium evaporation panels, Foote Mineral Company in Silver Peak, Nevada.
Air-conditioning equipment at the Fertilizer Machinery Laboratory, Bureau of Agricultural Engineering, U.S. Department of Agriculture, at the Arlington Experiment Farm in Rosslyn, Virginia. This equipment was used for controlling temperature and relative humidity in the fertilizer distributor testing room.
Alsike clover plant with a root growing from the peticle of one cotyledon.
American Vanadium Company Mine Site, image taken in Jumasha, Peru, in the Peruvian Andes.
Ammonia oxidation apparatus.
Ammonia–carbon dioxide pump and urea autoclave at the Fixed Nitrogen Research Laboratory.
Display showing the ammonia-(urea-water) system at 28 degrees Centigrade, possibly created by R. O. E. Davis.
Analysis and Indication of the Carbon Monoxide Content of a Gas Stream, Fixed Nitrogen Research Laboratory
Apparatus, possibly a mixing device.
Apparatus, possibly a mixing device.
Apparatus in the Arc Laboratory, Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
"Metallic Contact Apparatus" at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
R. O. E. Davis with an apparatus for filling tubes as part of the study of NH3-CO2-Urea-H2O systems.
C. A. Black with an apparatus for filling tubes as part of the study of NH3-CO2-Urea-H2O systems.
W. E. Kuentzel with an apparatus used for the removal of carbon monoxide from water gas by cuprous solution scrubbing.
W. E. Kuentzel with an apparatus used for the removal of carbon monoxide from water gas by preferential combustion.
Laboratory set-up that includes a thermostat, an apparatus, and an analytical train used for measuring vapor pressure in the study of urea synthesis at the Fixed Nitrogen Research Laboratory.
Laboratory set-up that includes a thermostat and an apparatus for measuring vapor pressures in the study of urea synthesis at the Fixed Nitrogen Research Laboratory.
E. J. Fox with towers used for the absorption of nitric oxides by phosphate rock via the wet method at the Fixed Nitrogen Research Laboratory.
E. J. Fox with a rotary tunnel used for the absorption of nitric oxides by ground phosphate rock via the dry method at the Fixed Nitrogen Research Laboratory.
Tube used for the study of the activity of K+ ions and electrons in the activation of N2 + 3H2 in the NH3 synthesis.
J. W. Westhaver and Mr. LaMar demonstrating the apparatus used for the study of the thermal decomposition of ammonia on tungsten, molybdenum, nickel, and iron catalysts at the Fixed Nitrogen Research Laboratory.
Apparatus for the study of equilibrium.
J. W. Westhaver with apparatus used in connection with the decomposition of ammonia on hot surfaces.
J. W. Westhaver and E. S. Lamar with apparatus described as "Apparatus for the study of the Relative Activity of K+ ions and electrons in the Synthesis of NH3 from N2 + 3H2."
Apparatus at the Fixed Nitrogen Research Laboratory.
M. C. Molstad with equipment described as "carbon dioxide removal from water gas by water scrubbing under pressure."
Apparatus used for the "coated strip method" in order to study the "decomposition of ammonia on hot catalyst surfaces."
R. A. Nelson (left) and E. S. Lamar, demonstrating the complete apparatus used for the "coated strip method" of studying the decomposition of ammonia on hot catalyst surfaces.
Apparatus used for studying the activation of gases by bombardment with positive ions.
Apparatus developed for the study of the absorption spectrum of ozone in the visible and photographic infrared.
Apparatus developed for the study of the absorption spectrum of ozone in the visible and photographic infrared.
Apparatus for the production of soft X-radiation.
Apparatus for Ammonia Removal at the Fixed Nitrogen Research Laboratory
Apparatus for determining the solubility of gases in liquids. In the bath are twin bottle high-pressure stirrers.
Apparatus for determining the solubility of gases in water at various temperatures and pressures up to 1,000 atmospheres.
Apparatus at the Fixed Nitrogen Research Laboratory
D. C. Bardwell with apparatus for experimenting with the chemical effects of radon.
Apparatus for the analysis of minute quantities of gases.
Apparatus used to grow plants under sterile conditons.
Apparatus for hydrogen analysis from the Synthetic Ammonia Division.
Apparatus at the Fixed Nitrogen Research Laboratory
E. P. Bartlett with an apparatus for measuring the compressibility of gases at hIgh pressures at the Fixed Nitrogen Research Laboratory.
Apparatus for measuring the compressibility of gases at high pressures at the Fixed Nitrogen Research Laboratory.
Apparatus for measuring the compressibility of gases at high pressures at the Fixed Nitrogen Research Laboratory.
E. P. Bartlett with an apparatus for measuring the compressibility of gases at hIgh pressures at the Fixed Nitrogen Research Laboratory.
Apparatus used for the measuring of vapor pressures, related to the study of urea synthesis.
Apparatus for obtaining X-ray diffraction patterns.
Apparatus for Ozone Production, Fixed Nitrogen Research Laboratory
Parts of apparatus for growing higher plants in a sterile medium.
Parts of apparatus for growing higher plants in a sterile medium.
Assembled apparatus for growing higher plants in a sterile medium.
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus for studying photoelectric emissions.
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus for Testing Catalysts, Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus for the Analysis of Vapors, Fixed Nitrogen Research Laboratory
Apparatus for the experimental production of hydrogen from methane and steam, developed by E. C. White at the Fixed Nitrogen Research Laboratory.
Apparatus for the phase-rule investigation of the iron-nitrogen system.
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Apparatus for the study of the catalytic decomposition of ozone.
Apparatus for the study of the catalytic decomposition of ozone, showing a detail of the gas-purification rack.
Apparatus for the study of the compressibility of gases at high pressures.
W. E. Kuentzel and apparatus for the study of the thermal and catalytic decomposition of azomethane.
Apparatus for the study of the thermal and catalytic decomposition of azomethane.
Apparatus for the Testing of Catalysts, Fixed Nitrogen Research Laboratory
Apparatus for Vapor Pressure Determinations, Fixed Nitrogen Research Laboratory
Apparatus at the Fixed Nitrogen Research Laboratory
Mr. Hetherington demonstrating the barometers and potentiometer used for temperature control in the high-pressure laboratory.
Dr. Leatherman in the high-pressure laboratory with apparatus used to determine the amount of inert gas in nitrogen made by the fractionation of liquid air.
R. A. Nelson and C. H. Kunsman with apparatus used for the study of the decomposition of ammonia on catalyst surfaces.
Apparatus at the Fixed Nitrogen Research Laboratory
Auxiliary Gasoline Engine for Catalyst Testing Plant, Fixed Nitrogen Research Laboratory
Travis Hignett in a room with blowing engines for the experimental blast furnace.
Blowing out of blast furnace.
Apparatus for the study of gas analysis, called the Bone-Wheeler Gas Analysis Apparatus.
Image taken in Bridgeville, Pennsylvania, at the Vanadium Corporation of America's plant.
Image taken in Bridgeville, Pennsylvania, at the Vanadium Corporation of America's plant.
Image taken in Bridgeville, Pennsylvania, of a warehouse filled with crude vanadium ore from Mina Ragra, Peru.
C. A. Black with Apparatus at the Fixed Nitrogen Research Laboratory
C. A. Black with Apparatus at Fixed Nitrogen Research Laboratory
C. D. Garby with Apparatus, Fixed Nitrogen Research Laboratory
C. M. Sullivan and F. N. Tierney outdoors with an iron burner for ammonia catalyst preparation.
Carbon dioxide drier, compressor, liquifier, and liquid storage in the urea plant at the Fixed Nitrogen Research Laboratory.
Carbon Dioxide Removal from Water Gas by Water Scrubbing under Pressure
A carbon monoxide generator and compressor at the Fixed Nitrogen Research Laboratory.
Carbon-tube precipitator and spray tower at the blast furnace plant.
Carpenter Shop at Fixed Nitrogen Research Laboratory
Catalyst Testing Plant, Fixed Nitrogen Research Laboratory
Catalyst Testing Plant, Fixed Nitrogen Research Laboratory
Catalyst Testing Plant, Fixed Nitrogen Research Laboratory
Mr. Royster (left) and Mr. Hignett charging the experimental blast furnace.
Mr. Royster (left) and Mr. Hignett charging the experimental blast furnace.
Clean-up on Iwo Jima, 1945.
Close-up of the micro-spot welder and soldering pencil on the apparatus for the preparation of thermocouples.
Cloth on the ground, Fixed Nitrogen Research Laboratory.
Colorimeter, Fixed Nitrogen Research Laboratory
Combination Hot Plate and Shaker, Fixed Nitrogen Research Laboratory
Complete set-up for the preparation of thermocouples.
E. P. Bartlett's high-pressure laboratory, showing the compression and high-pressure storage cylinders. Part of the hand-operated booster is shown in the background.
Mr. Tremearne with the compressor used in the carbon dioxide refrigeration system in the high-pressure laboratory.
Compressors for Catalyst Testing Plant, Fixed Nitrogen Research Laboratory
Conference Room at the Fixed Nitrogen Research Laboratory.
Constant Humidity Room at the Arlington Farm Laboratory. The photograph identifies the following: (a and b) "junk"; (c) receiving tray; (d) fertilizer distributor; (e) fertilizer drawer; (f) hygrothermograph; (g) revolution counter or "speed" counter; and (h) dust curtain.
V. L. Gaddy with a constant-temperature bath for determining the urea equilibrium at the Fixed Nitrogen Research Laboratory.
Control Board, Fixed Nitrogen Research Laboratory
Mr. Hignett with control instruments for the experimental blast furnace.
Results of an experiment to determine whether corn can secure its nitrogen from the air if the corn is grown in the presence of nitrogen-fixing bacteria. No nitrogen salts were added to any of the bottles. From left to right the containers with corn plants contained the following: sterile without sucrose; Azotobacter vinelandii without sucrose; Azotobacter vinelandii with 5 grams sucrose; Azotobacter vinelandii plus Bacillus cereus with 5 grams sucrose; B. radicicola with 5 grams sucrose; B. radicicola plus Bacillus cereus with 5 grams sucrose.
Results of an experiment to determine whether corn growing under sterile conditions can use ammonia nitrogen. The rate of application of nitrogenous salts was 100 mg nitrogen per bottle. From left to right: no nitrogen; ammonium sulfate; sodium nitrate; ammonium sulfate 50% and sodium nitrate 50%; calcium nitrate; ammonium phosphate.
Cyanamide Laboratory at the Fixed Nitrogen Research Laboratory.
Decomposition chamber for the thermal decomposition of ammonia on tungsten, molybdenum, nickel, and iron catalysts.
"Mr. Adams" demonstrating the apparatus for the determination of the hygroscopicity of fertilizer materials and mixtures.
Apparatus for the determination of the hygroscopicity of fertilizer materials and mixtures at Arlington Farm ,VA.
Diagram for Apparatus, Fixed Nitrogen Research Laboratory
Drillability Apparatus
E. D. Crittenden Demonstrating Catalyst Testing, Fixed Nitrogen Research Laboratory
E. D. Crittenden demonstrating catalyst testing at pressures of 1 to 100 atmospheres pressure. The reaction bombs in the cans are water cooled, and the automatic pressure-regulating valve, gas sampling, and measuring devices are also shown.
E. W. Guernsey with Apparatus, Fixed Nitrogen Research Laboratory
Electric Arc Furnace, Fixed Nitrogen Research Laboratory
H. H. Daniels in the electrical shop at the Fixed Nitrogen Research Laboratory.
Electrolytic Cells, Fixed Nitrogen Research Laboratory
Electron Inertia Apparatus, Fixed Nitrogen Research Laboratory
Emptying the Slag Ladle of the No. 2 Blast Furnace, Fixed Nitrogen Research Laboratory
Engineering Laboratory Building
Engines for Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Engines for Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Engines for Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Portrait of Alfred Nobel, the Swedish chemist who invented dynamite. Nobel left his fortune to establish the Nobel Foundation. Since 1901 the prize has honored men and women for outstanding achievements in physics, chemistry, medicine, and literature, and for work in peace (economics was added in 1969).
Engraving of Andre-Marie Ampere. A circular engraving with a square mat; at the bottom of the image is the following: "David, 1829."
Portrait of August Wilhelm Hofmann, a professor in the Royal College of Chemistry, London.
Portrait of August Wilhelm Hofmann, a professor in the Royal College of Chemistry, London.
Portrait of Eben J. Horsford.
Portrait of Eilhard Mitscherlich.
Portrait of George Fownes.
Portrait of Heinrich Rose.
Engraving of Henry Bower.
Portrait of James Sheridan Muspratt.
Engraving of John Dalton (1766–1844). Dalton was an English chemist, physicist, and meteorologist. He was also a pioneer in the development of modern atomic theory.
Engraving of Joseph Black, Scottish professor of medicine in the 18th century at the University of Glasgow, where he was also a lecturer in chemistry. Black was noted for his work on latent and specific heats and for his "discovery" of carbon dioxide.
Portrait of Joseph Priestley.
Engraving of Robert Bunsen, developer of the Bunsen burner and a well-known German chemist. In 1860, along with colleague Gustav Kirchhoff, he discovered cesium and rubidium with the aid of the spectroscope they had developed the year before.
Engraving of Sir Robert Kane.
Portrait of William Gregory.
Portrait of William Hyde Wollaston.
Portrait of John Dalton (1766–1844), drawn and etched by J. Stephenson. Dalton was an English chemist, physicist, and meteorologist. He was also a pioneer in the development of modern atomic theory.
Experiment, unidentified.
Experiment
Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Blast-Furnace Plant during T.V.A. Operation
Experimental Furnace for Smelting of Phosphate, Fixed Nitrogen Research Laboratory
Exterior of Fixed Nitrogen Research Laboratory
Exterior of Fixed Nitrogen Research Laboratory
F. E. Allison Studying the Fixation of Nitrogen by Bacteria, Fixed Nitrogen Research Laboratory.
F. E. Allison Studying the Fixation of Nitrogen by Bacteria, Fixed Nitrogen Research Laboratory.
Fertilizer Distribution Testing Apparatus
Fertilizer Distributor Machine
Fertilizer Machinery Laboratory
"Fixation of Atmospheric Nitrogen" Exhibit, Fixed Nitrogen Research Laboratory
Fixed Nitrogen Research Laboratory
Fixed Nitrogen Research Laboratory
Fixed Nitrogen Research Laboratory
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory.
Exterior photograph at the Fixed Nitrogen Research Laboratory.
Fixed Nitrogen Research Laboratory Exhibit at the 1926 Sesquicentennial International Exposition, Philadelphia, PA.
Fixed Nitrogen Research Laboratory Exhibit at the 1926 Sesquicentennial International Exposition, Philadelphia, PA.
Unidentified Personnel, Fixed Nitrogen Research Laboratory
Fixed Nitrogen Research Laboratory Personnel
Flushing Slag from the Phosphoric Acid Furnace, Fixed Nitrogen Research Laboratory
Flushing the No. 2 Blast Furnace at Night, Fixed Nitrogen Research Laboratory
Foote Mineral Company, Kings Mountain, North Carolina
Image taken in Bridgeville, Pennsylvania, of the furnaces at the Vanadium Corporation of America's plant.
General Repair Shop at the Fixed Nitrogen Research Laboratory
General Repair Shop at the Fixed Nitrogen Research Laboratory.
George Wieczorek and Furnace
George Wieczorek and Unidentified Man Testing Radiation Levels
George Wieczorek Holding Geiger Counter
George Wieczorek Holding Geiger Counter
Group Photograph at Fixed Nitrogen Research Laboratory
Group Photograph from Meeting at Fixed Nitrogen Research Laboratory
Group Portrait
Group Portrait
Group Portrait, Fixed Nitrogen Research Laboratory.
Group portrait at the Chemists' Club, second from the right is Lincoln T. Work; second from the left is W. F. George.
Group Portrait at the Fixed Nitrogen Research Laboratory
H. C. Hetherington in the Urea Plant at the Fixed Nitrogen Research Laboratory
H. J. Krase in the Urea Plant at the Fixed Nitrogen Research Laboratory
"Hardesty's Granulation Equipment."
Hearth and Crucible of the No. 2 Furnace Ready for Assembly before Run 508, Fixed Nitrogen Research Laboratory
Hearth and Crucible of No. 2 Furnace under Construction, Fixed Nitrogen Research Laboratory
Hearth and Crucible of No. 2 Furnace under Construction, Fixed Nitrogen Research Laboratory
Hearth and Crucible of No. 2 Furnace under Construction, Fixed Nitrogen Research Laboratory
High-Pressure Circulating Pump at the Fixed Nitrogen Research Laboratory
High-Pressure Laboratory, Fixed Nitrogen Research Laboratory
High-Pressure Laboratory, Fixed Nitrogen Research Laboratory
High-Pressure Laboratory, Fixed Nitrogen Research Laboratory
High-Pressure Pump at the Fixed Nitrogen Research Laboratory
High-Pressure Pump at the Fixed Nitrogen Research Laboratory
High-Temperature Vacuum Furnace at the Fixed Nitrogen Research Laboratory
Hot Blast Stove of the Phosphoric Acid Furnace, Fixed Nitrogen Research Laboratory
Hydraulic Pump, Fixed Nitrogen Research Laboratory
Indoor Soil Track
Infrared Spectrograph, Fixed Nitrogen Research Laboratory
Front lateral view of an infrared spectrograph. Visible are the thermocouple vacuum system and exterior view of the moving plate holder. The operator, Mr. Liddel, is adjusting the vernier setting of the Littrow mirror.
Driving mechanism of automatic self-recording Infrared spectrograph, showing speed reduction from the motor and elimination of vibration by leather differentials, as well as an adjustable pivot setting for varying the dispersion of the spectograph.
Interior of Engine Room
Interior of Engine Room
Interior of Engine Room
Interior photograph of the First National Bank at 315 Chestnut Street, Philadelphia, PA.
Interior photograph of the First National Bank at 315 Chestnut Street, Philadelphia, PA.
Interior photograph taken from the mezzanine level of the First National Bank at 315 Chestnut Street, Philadelphia, PA.
Interior photograph of the First National Bank at 315 Chestnut Street, Philadelphia, PA, taken on the ground floor of the building facing south toward Chestnut Street.
Interior photograph of the First National Bank at 315 Chestnut Street, Philadelphia, PA, taken on the ground floor of the building facing south toward Chestnut Street.
Investigation of the Effect of Phosphine on Ammonia Catalysts at the Fixed Nitrogen Research Laboratory
J. E. Reuter at the Fixed Nitrogen Research Laboratory
J. E. Reuter at the Fixed Nitrogen Research Laboratory
J. G. Thompson and C. L. Sullivan Demonstrating a Hydrogen Burner, Fixed Nitrogen Research Laboratory
J. G. Thompson with Carbon Monoxide Generator and Compressor at the Fixed Nitrogen Research Laboratory
J. G. Thompson with Carbon Monoxide Generator and Compressor at the Fixed Nitrogen Research Laboratory
J. G. Thompson, Fixed Nitrogen Research Laboratory
J. Y. Yee with Apparatus, Fixed Nitrogen Research Laboratory
James Wilson, Secretary of Agriculture (1897–1914) in a carriage with the coachman and horse team.
Keokuk Electro-Metals Company, American Vanadium Company plant in Keokuk, Iowa. The image was taken in 1916.
L. A. Pinck Demonstrating the Nitration of Organic Substances, Fixed Nitrogen Research Laboratory
L. Testa with Apparatus
Laboratory Apparatus, Fixed Nitrogen Research Laboratory
Laboratory Apparatus, Fixed Nitrogen Research Laboratory
Laboratory Apparatus, Fixed Nitrogen Research Laboratory
Laboratory Apparatus, Fixed Nitrogen Research Laboratory
Laboratory equipment used in producing an intermediate suitable for conversion to potassium metaphosphate.
Laboratory equipment used in producing an intermediate suitable for conversion to potassium metaphosphate.
Dick Adams in the laboratory at the Fixed Nitrogen Research Laboratory.
Mr. Merz with apparatus in the laboratory at the Fixed Nitrogen Research Laboratory.
Laboratory Experiment
Laboratory Experiment
Laboratory of Chemical Warfare Service at the Fixed Nitrogen Research Laboratory
Laboratory in Catalysis Plant at the Fixed Nitrogen Research Laboratory
Laboratory Set-Up at Fixed Nitrogen Research Laboratory
J. W. Westhaver in the laboratory, conducting an investigation of the chemical action in the glow discharge.
Laboratory Set-Up for the Oxidation of Ammonia with Pure Oxygen, Fixed Nitrogen Research Laboratory
Lakewood Mill of the Primos Chemical Company in Colorado.
Unidentified landscape photograph.
Unidentified landscape photograph.
Large-Capacity Constant Temperature Bath with a Removable Glass Front, Fixed Nitrogen Research Laboratory
Library at the Fixed Nitrogen Research Laboratory.
Limeglass Tube, Fixed Nitrogen Research Laboratory
Liquid Air Condenser for Low-Temperature Distillations at the Fixed Nitrogen Research Laboratory
Liquid Ammonia and Carbon Dioxide Pumps and Coolers in the Urea Plant, Fixed Nitrogen Research Laboratory
Liquid Ammonia and Carbon Dioxide Pumps and Coolers in the Urea Plant, Fixed Nitrogen Research Laboratory
M. C. Molstad with Apparatus, Fixed Nitrogen Research Laboratory
M. F. Fogler Demonstrating the Dissociation of Nitric Acid at the Fixed Nitrogen Research Laboratory
M. K. Murray Demonstrating a Nitrometer, Fixed Nitrogen Research Laboratory
Machine Shop at the Fixed Nitrogen Research Laboratory
Machine Shop at the Fixed Nitrogen Research Laboratory
Machine Shop at the Fixed Nitrogen Research Laboratory.
Machine Shop at the Fertilizer Machinery Laboratory
Machinery for Crushing Ore, Fixed Nitrogen Research Laboratory
Measurement of the Thermal Conductivity of Active Nitrogen at the Fixed Nitrogen Research Laboratory.
Measuring the Combustion Temperature of Coke in the Blast Furnace, Fixed Nitrogen Research Laboratory
Mechanism for Nitrogen Fixation by Alpha Rays at the Fixed Nitrogen Research Laboratory
Microapparatus used for studying bacterial nitrogen fixation. Image shows the Warburg-Barcroft microrespiration apparatus, the Micro-Kjeldahl distilling apparatus; multiple gas-mixing flow meter; nephelometer; and bacterial culture bottle. On the left is Dr. Burk and to the right is Mr. Lineweaver.
Image of a campsite near a vanadium mine, taken at Mina Ragra, an American Vanadium Company location in the Peruvian Andes.
Image of the furnaces at a vanadium mine, taken at Mina Ragra, an American Vanadium Company location in the Peruvian Andes.
Image taken in 1925 of an exterior view of the vanadium mine at Mina Ragra, an American Vanadium Company location in the Peruvian Andes.
Image taken in 1925 of a central cut at the vanadium mine at Mina Ragra, an American Vanadium Company location in the Peruvian Andes.
Image taken in 1925 of the mine field at Mina Ragra, an American Vanadium Company location in the Peruvian Andes.
Mortar crew at work along the Normandy coast in France, June 1944.
Mounting Frame and Driving Mechanisms for Fertilizer Distribution Testing Apparatus
Mr. Madorsky with Gas-Fired Smelting Furnace for Potash Volatilization, Fixed Nitrogen Research Laboratory
E.J. Fox and K.S. Love in the Nitrogen Analytical Laboratory.
No. 2 experimental blast furnace with a group of employees in front. From left to right: ? Reilly, ? Royster, Travis Hignett, ? Whitlow, ? Clark.
No. 2 experimental blast furnace.
Photograph of the superstructure of the No. 2 experimental blast furnace taken from the platform of the No. 1 precipitator.
Distant view of the No. 2 furnace with the precipitator on and the stockpiles.
Distant view of the No. 2 furnace with the precipitator off and the stockpiles.
No. 2 furnace in blast on phosphate burden Run 505 (notation taken from photograph).
No. 2 furnace in blast on phosphate burden Run 505 (notation taken from photograph).
Observing termperature inside the Royster stoves during T.V.A. operation. Poss and Damico are in the photograph.
Opening the cinder notch of the No. 2 furnace.
Mr. Parker in a room with ore-crushing machinery for the experimental blast furnace.
Organic Combustion Furnace and Train, Fixed Nitrogen Research Laboratory
Party at the Fixed Nitrogen Research Laboratory
"Perfect-O-Feed Hopper" on Drillability Machine
Personnel at the end of the T.V.A. operation of the experimental blast furnace. From left to right, standing: Hopkins, Tuve, Clark, Allan, Royster, Travis Hignett, Reilly, Wright, and unknown. Kneeling: Bowe, Jansen, Rigsby, Connors, unknown, Damico, and Finch.
Sterile culture of small phanerogams on agar in a bottle.
Phosphoric Acid Furnace in Blast and Potash Furnace under Construction, Fixed Nitrogen Research Laboratory
Phosphoric Acid Furnace in Blast and Potash Furnace under Construction, Fixed Nitrogen Research Laboratory
Phosphoric Acid Furnace in Blast, Fixed Nitrogen Research Laboratory
Phosphoric Acid Furnace, Fixed Nitrogen Research Laboratory
Photograph of Tools
The Grounds of the Fixed Nitrogen Research Laboratory.
The Grounds of the Fixed Nitrogen Research Laboratory.
The Grounds of the Fixed Nitrogen Research Laboratory.
The Grounds of the Fixed Nitrogen Research Laboratory.
The Grounds of the Fixed Nitrogen Research Laboratory.
"Photographing the Spectrum of Active Nitrogen," Fixed Nitrogen Research Laboratory
Planting and Fertilizing Equipment
Portrait of ? Parker.
Portrait of ? Parker.
Portrait of ? Salter.
Portrait of ? Seeliger.
Portrait of a U.S. Department of Agriculture Employee
Portrait of a U.S. Department of Agriculture Employee
Portrait of a U.S. Department of Agriculture Employee
Portrait of a U.S. Department of Agriculture Employee
Portrait of a U.S. Department of Agriculture Employee
Portrait of a U.S. Department of Agriculture Employee
Portrait of A. A. Backhus at a desk.
Portrait of A. A. Harrison.
Portrait of A. Calman.
Portrait of A. Cressy Morrison, author of Man in a Chemical World, published in 1937.
Portrait of A. Cressy Morrison, author of Man in a Chemical World, published in 1937.
Portrait of A. E. Pitcher.
Portrait of A. J. Goldsmith.
Portrait of A. John L. Moritz.
Portrait of A. M. McAfee.
Portrait of A. M. McAfee.
Portrait of A. Nelson Lewis (d. 1936).
Portrait of A. O. Jaeger.
Portrait of A. Polhemus Cobb.
Portrait of A. Vogel.
Portrait of A. L. Halvorsen.
Portrait of Abbot K. Hamilton.
Portrait of Adolf von Baeyer, awarded the Nobel Prize in Chemistry in 1905 "in recognition of his services in the advancement of organic chemistry and the chemical industry, through his work on organic dyes and hydroaromatic compounds." Baeyer was the first to synthesize the plant dye indigo.
Portrait of Adolf von Baeyer
Portrait of Adolph Harvitt.
Portrait of Adolph Kuttroff.
Portrait of Adolphus C. Blum.
Portrait of Alan Porter Lee.
Portrait of Albert C. Hale.
Portrait of Albert E. Miller.
Portrait of Albert Edward Marshall.
Portrait of Albert F. Nathan.
Portrait of Albert Gladding Stillwell.
Portrait of Albert Kingsbury.
Portrait of Albert M. Todd.
Portrait of Albert N. Into.
Portrait of Albert P. Hallock.
Portrait of Albert Plaut.
Portrait of Albert R. Brunker.
Portrait of Albert R. Ledoux.
Portrait of Albert Walter.
Portrait of Alden H. Emery.
Portrait of Aldus Neff Hershey.
Portrait of Alexander Alexander.
Portrait of Alexander Fergusson.
Portrait of Alexander Fleming (1881–1955), developer of penicillin. He was awarded the 1945 Nobel Prize in Physiology or Medicine for the discovery of the drug, along with Ernst Boris Chain and Howard Walter Florey.
Portrait of Alexander Robb.
Portrait of Alexander W. Nibelius.
Portrait of Alexis W. Keen.
Portrait of Alfonso P. Villa.
Portrait of Alfred A. Haldenstein.
Portrait of Alfred H. Kropff.
Portrait of Alfred Hoffman.
Portrait of Alfred J. Vollrath.
Portrait of Alfred M. Houghton.
Portrait of Alfred P. Trautwein.
Portrait of Alfred Robert Louis Dohme.
Portrait of Alfred Robert Louis Dohme.
Portrait of Alfred S. Burdick.
Portrait of Alfred W. Kuebler.
Portrait of Allan D. Risteen.
Portrait of Allen Rogers (1876–1938).
Portrait of Albert W. Hawkes.
Portrait of Allen Wade Dow.
Portrait of Alvah Horton Sabin (1851–1940).
Portrait of Alvin F. Shepard.
Portrait of Ancel St. John.
Portrait of Anne Duca, the Chemists' Club librarian, with S. D. Koonce and Lincoln T. Work in the library. S. D. Koonce was president of the C.M.R.A.
Portrait of Anthony Anable.
Portrait of Anthony Gref.
Portrait of Anthony Moultrie Muckenfuss.
Portrait of Archibald J. Weith.
Portrait of Areli H. Jacoby.
Portrait of Arno Carl Fieldner (b. 1881).
Portrait of Arno W. Nickerson.
Portrait of Arthur B. Foster.
Portrait of Arthur Becket Lamb, director of the Fixed Nitrogen Research Laboratory from 1919 to 1921. He won the Priestley Medal in 1949.
Portrait of Arthur Boylston.
Portrait of Arthur C. Langmuir.
Portrait of Arthur C. Neish.
Portrait of Arthur Dehon Little (1863–1935). Little was an MIT-educated chemist who, along with fellow chemist Roger B. Griffin, established the world's first consulting company in 1886. The company's mission was to provide expertise in analytical chemistry and technical product-improvement services to private industry.
Portrait of Arthur Dehon Little (1863–1935). Little was an MIT-educated chemist who, along with fellow chemist Roger B. Griffin, established the world's first consulting company in 1886. The company's mission was to provide expertise in analytical chemistry and technical product-improvement services to private industry.
Portrait of Arthur Douglas Chambers, a chemist who spent his career at DuPont working primarily with dyestuffs. Johns Hopkins University has a named professorship in his honor, the Arthur D. Chambers Chair in Chemistry.
Portrait of Arthur Edward Hill.
Portrait of Arthur Eugene Ellis.
Portrait of Arthur Kuttroff.
Portrait of Arthur Langmeier.
Portrait of Arthur Leonard Benkert.
Portrait of Arthur Lowenstein.
Portrait of Arthur M. Smith.
Portrait of Arthur Pine Van Gelder.
Portrait of Arthur R. Belyea.
Portrait of Arthur Seubert.
Portrait of Arthur Vining Davis.
Portrait of Arthur W. Burwell.
Portrait of Arthur Wayne Clark.
Portrait of Arthur Wright.
Portrait of August Elmer (1854–1941).
Portrait of August Klipstein.
Portrait of August Klipstein, Jr.
Portrait of Auguste J. Rossi.
Portrait of Augustus H. Fiske.
Portrait of Austin M. Purves.
Portrait of Austin Sherman.
Portrait of Avel B. Laftmen.
Portrait of B. F. Williamson.
Portrait of B. P. Groth
Portrait of B. R. Arnmour.
Portrait of B. R. Tunison.
Portrait of B. S. Proper.
Portrait of Baird Magnus.
Portrait of Benjamin A. Anderton.
Portrait of Benjamin Jurist.
Portrait of Benjamin Talbot Brooks.
Portrait of Benjamin Tappen Fairchild (1850–1939).
Portrait of Bennett Epstein.
Portrait of Bernard Herstein.
Portrait of Bernard L. Oser.
Portrait of Bernhard Conrad Hesse (1869–1934). Hesse was a key figure in the early development of regulations for food-color additives.
Portrait of Berthol A. Ludwig.
Portrait of Bertram Ezekiel.
Portrait of Bruce Keith Brown.
Portrait of Bruce Robinson Silver.
Portrait of Burgess P. Wallace.
Portrait of Burrett S. Lacy.
Portrait of C. B. Gnadinger.
Portrait of C. Campbell Baird.
Portrait of C. D. Beddingfield.
Portrait of C. F. Kaegebahn.
Portrait of C. F. Vaughn.
Portrait of C. H. Kiessig.
Portrait of C. H. Kimberly.
Portrait of C. K. Williams.
Portrait of C. Lansing Hays.
Portrait of C. N. Stevens.
Portrait of C. N. Turner.
Portrait of C. P. Hugo Schoellkopf.
Portrait of C. P. Schlicke.
Portrait of C. S. Hollander.
Portrait of C. Wilbur Miller.
Portrait of Carl A. Funke.
Portrait of Carl B. Fritsche.
Portrait of Carl B. Peters.
Portrait of Carl Brucker.
Portrait of Carl Fischer.
Portrait of Carl G. Amend.
Portrait of Carl H. Hazard.
Portrait of Carl Haner, Jr.
Portrait of Carl Rudolph Schultz.
Portrait of Carl S. Miner.
Portrait of Carl S. Miner.
Portrait of Carl S. Williams.
Portrait of Carl Walter Schulze.
Portrait of Carleton Ellis.
Portrait of Carleton H. Palmer.
Portrait of Carrington Cabell Tutwiler.
Portrait of Carroll A. Hochwalt.
Portrait of Cephas C. Smith.
Portrait of Charles A. Boschen.
Portrait of Charles A. Higgins. It is noted on the photograph that Higgins was president of the Hercules Powder Company.
Portrait of Charles A. Lunn.
Portrait of Charles A. Weeks.
Portrait of Charles Albert Browne.
Portrait of Charles Albert Browne.
Portrait of Charles Albert Catlin.
Portrait of Charles Allen Loring.
Portrait of Charles Augustus Kraus.
Portrait of Charles Avery Doremus.
Portrait of Charles Blanc.
Portrait of Charles C. Scheffler.
Portrait of Charles Dohme.
Portrait of Charles E. Adams, chairman of Air Reduction Company.
Portrait of Charles E. Sholes.
Portrait of Charles E. Vanderkleed.
Portrait of Charles Edward Munsell, developer of the Munsell color system.
Portrait of Charles Engelhard.
Portrait of Charles Ernest Pellew.
Portrait of Charles Ferdinand Roth.
Portrait of Charles Fischbeck.
Portrait of Charles Francis McKenna (b. 1861).
Portrait of Charles Francis McKenna (b. 1861).
Portrait of Charles Frederick Chandler (1836–1925). The image includes an "autograph folder" with Chandler's signature and studio name. Chandler worked for New York City's Metropolitan Board of Health between 1867 and 1883, providing a nationwide model for monitoring food and drugs, providing free vaccinations, ensuring safety in the milk supply, bringing clean water into the city, and developing building codes with adequate provisions for indoor plumbing. Chandler was also a successful consulting industrial chemist and a professor at Columbia University. He was also one of the founding members of the American Chemical Society and the first president of the Chemists' Club.
Portrait of Charles Frederick Chandler (1836–1925) at blackboard. The image includes an "autograph folder" with Chandler's signature and studio name. Chandler worked for New York City's Metropolitan Board of Health between 1867 and 1883, providing a nationwide model for monitoring food and drugs, providing free vaccinations, ensuring safety in the milk supply, bringing clean water into the city, and developing building codes with adequate provisions for indoor plumbing. Chandler was also a successful consulting industrial chemist and a professor at Columbia University. He was also one of the founding members of the American Chemical Society and the first president of the Chemists' Club.
Portrait of Charles Frederick Chandler (1836–1925). The image includes an "autograph folder" with Chandler's signature and studio name. Chandler worked for New York City's Metropolitan Board of Health between 1867 and 1883, providing a nationwide model for monitoring food and drugs, providing free vaccinations, ensuring safety in the milk supply, bringing clean water into the city, and developing building codes with adequate provisions for indoor plumbing. Chandler was also a successful consulting industrial chemist and a professor at Columbia University. He was also one of the founding members of the American Chemical Society and the first president of the Chemists' Club.
Portrait of Charles G. Stupp.
Portrait of Charles Gundlich.
Portrait of Charles H. MacDowell.
Portrait of Charles Holmes Herty (1867–1938).
Portrait of Charles Huisking.
Portrait of Charles J. A. Fitzsimmons.
Portrait of Charles J. Thatcher.
Portrait of Charles L. Campbell.
Portrait of Charles L. Gagnebin.
Portrait of Charles L. Mantell.
Portrait of Charles L. Rand.
Portrait of Charles L. Wiswall.
Portrait of Charles Lathrop Parsons.
Portrait of Charles Lee Reese (1862–1940).
Portrait of Charles Lee Reese (1862–1940).
Portrait of Charles Leroy Gibson.
Portrait of Charles Mace.
Portrait of Charles Martin Hall. He developed an inexpensive method for producing significant quantities of aluminum. The process was developed simultaneously by Paul Héroult and became known as the Hall-Héroult process.
Portrait of Charles Mendeleff.
Portrait of Charles N. Fry.
Portrait of Charles N. Hollwedel.
Portrait of Charles Needham Forrest (b. 1873).
Portrait of Charles Nelson Gilbert (1842–1934).
Portrait of Charles O. Brown.
Portrait of Charles P. Gulick. It is noted on the photograph that Gulick was president of NOPCO Chemical.
Portrait of Charles P. Hall.
Portrait of Charles S. Munson.
Portrait of Charles S. Pearce.
Portrait of Charles Schench Bradley.
Portrait of Charles Skeele Palmer.
Portrait of Charles T. Thompson.
Portrait of Charles W. Nichols.
Portrait of Charles W. Pearson.
Portrait of Chester H. Jones.
Portrait of Christopher G. Atwater.
Portrait of Clarence B. Dutton.
Portrait of Clarence George Stone.
Portrait of Clarence J. Herrly.
Portrait of Clarence K. Simon.
Portrait of Clarence Mason Joyce.
Portrait of Clarence Morgan.
Portrait of Clarence P. Harris.
Portrait of Clarence V. Ekroth.
Portrait of Clarence V. Ekroth.
Portrait of Clarence V. Steinhart.
Portrait of Clarence Wallace Marsh.
Portrait of Clarke Edwin Davis.
Portrait of Clayton Olin North.
Portrait of Clement C. Speidan.
Portrait of Clifford C. Furnas.
Portrait of Clifford Richardson.
Portrait of Clinton E. Dolbear.
Portrait of Colin Garfield Fink.
Portrait of Crosby Field.
Portrait of Curt Zechendorf.
Portrait of Cyril Backus Clark.
Portrait of D. H. Jackson.
Portrait of D. P. Morgan.
Portrait of D. Pyzel sitting at a desk.
Portrait of Daniel D. Berolzheimer.
Portrait of Daniel Dana Jackson (1870–1941).
Portrait of Daniel J. Danker.
Portrait of Daniel S. McAfee.
Portrait of Daniel W. Edgerly.
Portrait of David B. Hatcher.
Portrait of David Herbert Killeffer.
Portrait of David Spence.
Portrait of David Wesson.
Portrait of Delagnel Haigh.
Portrait of Donald B. Keyes.
Portrait of Donald Elmer Cable.
Portrait of Donald Price.
Portrait of Dudley J. Bachrach.
Portrait of Durand Woodman.
Portrait of E. C. Freeland.
Portrait of E. C. Higgins, Jr.
Portrait of E. Clifford Williams at a desk.
Portrait of E. D. Kingsley.
Portrait of E. D. Kingsley.
Portrait of E. F. A. Place.
Portrait of E. H. Ravenscroft.
Portrait of E. M. Sergeant with a pipe.
Portrait of E. P. Beckwith.
Portrait of E. S. Pattison.
Portrait of Earle Bernard Phelps.
Portrait of Edgar B. Carter.
Portrait of Edgar B. Stevens.
Portrait of Edgar Clay Britton.
Portrait of Edgar Clay Britton.
Portrait of Edgar H. Bedell.
Portrait of Edgar Sampson.
Portrait of Edmond E. Knoll.
Portrait of Edward A. Rykenbaer.
Portrait of Edward Bartow.
Portrait of Edward Burnett Vorhees.
Portrait of Edward C. Uhlig.
Portrait of Edward C. Uhlig.
Portrait of Edward E. Arnold.
Portrait of Edward Ellery (b. 1868).
Portrait of Edward F. Brundage.
Portrait of Edward Ford (1843–1920).
Portrait of Edward G. Acheson.
Portrait of Edward G. Acheson.
Portrait of Edward H. Lyon.
Portrait of Edward J. Goett. It is noted on the photograph that Goett was the executive vice president of Atlas Chemical Industries, Inc.
Portrait of Edward Johnson Barber.
Portrait of Edward Keller.
Portrait of Edward Mallinckrodt, Sr.
Portrait of Edward Needles Trump.
Portrait of Edward Nellis.
Portrait of Edward Plaut.
Portrait of Edward R. Berry.
Portrait of Edward R. Weidlein.
Portrait of Edward R. Weidlein talking with an unidentified man.
Portrait of Edward Teller.
Portrait of Edward W. Morley.
Portrait of Edward W. Runyon.
Portrait of Edward Weston (1850–1936).
Portrait of Edward Zaremba.
Portrait of Edwin Choplin Witherby.
Portrait of Edwin J. Barth.
Portrait of Edwin Jay Prindle.
Portrait of Egbert White.
Portrait of Elliot R. Alexander.
Portrait of Ellwood B. Spear.
Portrait of Ellwood Hendrick.
Portrait of Elmer Roberts.
Portrait of Elmore H. Northey.
Portrait of Elwood I. Clapp.
Portrait of Emanuel von Salis-Mayenfeld.
Portrait of Emerson H. Strickler.
Portrait of Emil Schlichting.
Portrait of Eric C. Kunz, an employee of Givaudan-Delawanna, Inc.
Portrait of Eric P. Swenson. It is noted on the photograph that Swenson was director of the National City Bank of New York.
Portrait of Ernest A. Congdon.
Portrait of Ernest Ballin.
Portrait of Ernest Carl Klipstein.
Portrait of Ernest Dunbar Clark.
Portrait of Ernest E. Hartman.
Portrait of Ernest Ellsworth Smith (1867–1930).
Portrait of Ernest H. Anthes.
Portrait of Ernest H. Volwiler.
Portrait of Ernest J. Lederle.
Portrait of Ernest K. Halbach.
Portrait of Ernest O. Patz (1871–1941).
Portrait of Ernest Woodward Dean.
Portrait of Ernst Beckman.
Portrait of Ernst Mahler.
Portrait of Eugene F. Roeber.
Portrait of Eugene Ramiro Grasselli.
Portrait of Eustice H. Gane.
Portrait of Everett B. Bragg.
Portrait of Everett M. York.
Portrait of Everett W. Boughton.
Portrait of Ezekiel Weintraub.
Portrait of F. E. Barrows.
Portrait of F. H. Baldwin.
Portrait of F. M. Crystal.
Portrait of F. N. Peters. It is noted on the photograph that Peters was an employee of the Quaker Oats Company.
Portrait of F. W. Clarke.
Portrait of F. W. K. Miller.
Portrait of F. W. Kressman.
Portrait of F. W. Zerban.
Portrait of Felix Van Cleef.
Portrait of Ferdinand Andrews.
Portrait of Ferdinand C. Schapper.
Portrait of Ferdinand G. Wiechmann.
Portrait of Fermin Ferrer.
Portrait of Firman E. Bear.
Portrait of Forrest S. Jones.
Portrait of Francis A. J. Fitzgerald.
Portrait of Francis D. Weeks.
Portrait of Francis Despard Dodge.
Portrait of Francis E. Stewart.
Portrait of Francis G. Frary.
Portrait of Francis H. Pough.
Portrait of Francis J. Rebman.
Portrait of Francis L. Steeken.
Portrait of Francis Patrick Garvan (1875–1937).
Portrait of Francis Wyatt.
Portrait of Frank A. Howard.
Portrait of Frank Austin Lidbury.
Portrait of Frank C. Moore.
Portrait of Frank Curtis, an employee of Monsanto Chemical Company.
Portrait of Frank Curtis Gephart (b. 1884).
Portrait of Frank D. Esterbrooks.
Portrait of Frank E. Maple.
Portrait of Frank Ellsworth Dodge.
Portrait of Frank Eugene Hale.
Portrait of Frank G. Breyer.
Portrait of Frank G. Breyer.
Portrait of Frank H. Reichel.
Portrait of Frank Jerome Tone.
Portrait of Frank L. Antisell.
Portrait of Frank L. May.
Portrait of Frank Morse Smith.
Portrait of Frank S. Hastings.
Portrait of Franklin Black.
Portrait of Franklin H. Warner.
Portrait of Franklin H. Warner.
Portrait of Franklin H. Warner.
Portrait of Franz Roessler.
Portrait of Fred P. Siebel.
Portrait of Fred W. Crane.
Portrait of Fred W. Payne.
Portrait of Fred W. Russe.
Portrait of Fred W. Wahlers.
Portrait of Frederic C. Bowman.
Portrait of Frederic J. LeMaistre.
Portrait of Frederich G. Zinsser.
Portrait of Frederich James Austin.
Portrait of Frederick Edel.
Portrait of Frederick J. Mayer.
Portrait of Frederick Jaeger.
Portrait of Frederick Kenney.
Portrait of Frederick M. Becket.
Portrait of Frederick Pope.
Portrait of Frederick R. Hazard.
Portrait of Frederick Schniewind.
Portrait of Frederick W. de John.
Portrait of Frederick W. Gookin.
Portrait of Fredrich W. White.
Portrait of Fredrick Ernest Breithut.
Portrait of Fritz Robitschek in front of a tower.
Portrait of Fritz W. Hoyler.
Portrait of G. B. Gildersleeve.
Portrait of G. E. Hawkins. It is noted on the photograph that Hawkins was vice president in charge of distribution at Air Reduction Company, Inc.
Portrait of G. Lee Camp, an employee of Monsanto.
Portrait of G. V. Sheffield.
Portrait of G. W. Repetti.
Portrait of Gae Bennett.
Portrait of Galen Howell Clevenger.
Portrait of Gaston F. du Bois, an employee of Monsanto Chemical Company.
Portrait of Gene Boyd Landes.
Portrait of Gene Boyd Landes.
Portrait of George A. Anderson.
Portrait of George A. Beningtin.
Portrait of George A. Bode.
Portrait of George A. Goodell. It is noted on the photograph that Goodell was the president of the Kentucky Color and Chemical Company from 1936 to 1941 and chairman of the board beginning in 1941.
Portrait of George A. Prochazka.
Portrait of George A. Stevenot.
Portrait of George A. Whitney.
Portrait of George Armstrong Smith.
Portrait of George Borrowman.
Portrait of George D. Van Arsdale.
Portrait of George Denton Beal.
Portrait of George E. Woods.
Portrait of George F. Fisher.
Portrait of George F. Zoffman.
Portrait of George Frederick Kunz (1856–1932).
Portrait of George G. Witwer.
Portrait of George H. A. Clowes.
Portrait of George H. Lubarsky.
Portrait of George H. Rider.
Portrait of George Knowles Swinburne.
Portrait of George L. Schaefer.
Portrait of George Lewis.
Portrait of George M. Snow.
Portrait of George M. Worden.
Portrait of George Martin Luther.
Portrait of George O. Curme, Jr.
Portrait of George O. Curme, Jr.
Portrait of George O. Curme, Jr., standing next to the Chemists' Club insignia at the Chemists' Club, New York, NY.
Portrait of George P. Adamson.
Portrait of George P. Lunt.
Portrait of George P. Walker.
Portrait of George Read Martin.
Portrait of George S. Barrows.
Portrait of George S. Cooper.
Portrait of George S. Page.
Portrait of George S. Robins.
Portrait of George Scatchard.
Portrait of George Schneider. It is noted on the photograph that Schneider was vice president in charge of the Technical Division, Celanese Corporation of America.
Portrait of George Simon.
Portrait of George T. Felbeck.
Portrait of George W. Goudy.
Portrait of George W. Gray.
Portrait of George W. Kubler.
Portrait of George W. Luft.
Portrait of George W. Miles.
Portrait of George W. Poland, Jr.
Portrait of George W. Raegiss.
Portrait of Glenn C. Finger.
Portrait of Glenn L. Haskell. It is noted on the photograph that Haskell was president of U.S. Industrial Chemicals, Inc.
Portrait of Glenn L. Haskell. It is noted on the photograph that Haskell was president of U.S. Industrial Chemicals, Inc.
Portrait of Glenn T. Seaborg with the U.S. flag and the Chemists' Club emblem. He is best known for discovering the element plutonium with Edwin McMillan, in February 1941. Seaborg led the team working with plutonium as part of the Manhattan Project during World War II. He and McMillan were awarded the Nobel Prize in Chemistry in 1951 for their work and research into transuranic elements.
Portrait of Godfrey W. Dyne.
Portrait of Gordon C. Mack.
Portrait of Gorham Crosby.
Portrait of Graham Gregsteen.
Portrait of Grant Allison Dorland.
Portrait of Guilford Lawson Spencer.
Portrait of Gustave P. Metz.
Portrait of Gustave W. Thompson.
Portrait of Gustavus Michaelis.
Portrait of Guy C. Howard.
Portrait of H. A. J. Wilkens.
Portrait of H. A. R. Zehrlaut.
Portrait of H. B. Baylor.
Portrait of H. C. A. Seebohm.
Portrait of H. C. Merriam.
Portrait of H. Charles Baskerville.
Portrait of H. E. Hofman.
Portrait of H. F. Atherton.
Portrait of H. G. Knight
Portrait of H. J. Hemingway.
Portrait of H. Jermain Creighton.
Portrait of H. M. Daggett.
Portrait of H. P. Trevithick.
Portrait of H. S. Farleigh.
Portrait of H. S. Ritter.
Portrait of H. Sheridan Baketel.
Portrait of H. W. Coombs.
Portrait of H. Walter Scott.
Portrait of Haman P. John.
Portrait of Hans Stauffer.
Portrait of Hans W. Vahlteich.
Portrait of Harlan Sherman Miner (1865–1938).
Portrait of Harold B. Caldwell.
Portrait of Harold C. Urey. Urey was awarded the Nobel Prize in Chemistry in 1934 for his pioneering work in isotopes and "heavy water."
Portrait of Harold D. Leslie.
Portrait of Harold F. Wakefield (1896–1965) reading the Percolator, the publication of the Chemists' Club.
Portrait of Harold H. Fries (b. 1886).
Portrait of Harold J. Brownlee.
Portrait of Harold Levey.
Portrait of Harold N. Spicer.
Portrait of Harold R. Rafton.
Portrait of Harold W. Frevert.
Portrait of Harold W. Leitch.
Portrait of Harry B. Curtis.
Portrait of Harry Carpenter.
Portrait of Harry Drake Gibbs (1872–1934).
Portrait of Harry Leigh Derby.
Portrait of Harry M. Hooker.
Portrait of Harry M. Hooker.
Portrait of Harry Noonan.
Portrait of Harry Owen Chute.
Portrait of Harry S. Bacal.
Portrait of Harvey J. Skinner (b. 1887).
Portrait of Harvey J. Skinner (b. 1887).
Portrait of Harvey N. Dauler.
Portrait of Hector Russell Carveth.
Portrait of Henry A. Huston.
Portrait of Henry A. Mabey.
Portrait of Henry B. Hass.
Portrait of Henry C. Roller.
Portrait of Henry Clapp Sherman.
Portrait of Henry Cornelius Enders (b. 1871).
Portrait of Henry Huxley.
Portrait of Henry J. Krebs.
Portrait of Henry L. Haas.
Portrait of Henry M. Lane.
Portrait of Henry M. Toch.
Portrait of Henry Sundheimer.
Portrait of Henry T. Corio.
Portrait of Henry T. Jarrett.
Portrait of Henry V. Walker.
Portrait of Henry Vinecome Arny.
Portrait of Henry W. Fisher.
Portrait of Henry Wigglesworth.
Portrait of Herbert Abram Baker.
Portrait of Herbert Belcher Baldwin.
Portrait of Herbert Benjamin Coho.
Portrait of Herbert G. Sidebottom.
Portrait of Herbert H. Dow (1866–1930), founder of Dow Chemical Company.
Portrait of Herbert Harrocks.
Portrait of Herbert M. Kaufmann.
Portrait of Herbert Philipp.
Portrait of Herbert Raymond Moody.
Portrait of Herman A. Metz (1867–1934).
Portrait of Herman F. Hoevel.
Portrait of Herman F. Kudlich.
Portrait of Herman F. Mark. Along with Hermann Staudinger and Wallace Carothers, Mark can be credited as a cofounder of polymer science. In the 1920s his X-ray crystallographic studies of cellulose showed it to be made of giant molecules containing thousands of atoms, as Staudinger held. Mark also showed that most polymer molecules are made of flexible chains, while Staudinger had thought them to be rigid rods.
Portrait of Herman Frasch (1851–1914). Frasch was born in Germany and came to the United States as a young man and established a chemical laboratory in Philadelphia. In 1887 Frasch patented a method of removing foul-smelling sulfur compounds from "sour" oil. In 1894 Frasch adapted the technology of the oil industry to sulfur mining and devised a means whereby the sulfur could be pumped out of the ground rather than mined. The process made American sulfur competitive with the more easily mined sulfur of Sicily.
Portrait of Herman S. Reiderer.
Portrait of Hiram S. Rivitz.
Portrait of Homer J. Wheeler.
Portrait of Homer S. Burns.
Portrait of Homer Winthrop Hillyer.
Portrait of Horace Vandeveer Cory.
Portrait of Horace W. McKenna.
Portrait of Horace Willard Hooker (1876–1939).
Portrait of Horatio Seymour Rubens.
Portrait of Howard B. Bishop. Bishop began his career as an analytical chemist with General Chemical Company. He eventually became president of the Sterling Products Company and the John C. Wiarda Chemical Company. He also had a "second career" as founder of the Human Engineering Foundation, which he used to campaign against alcohol, nicotine, and caffeine.
Portrait of Howard Coon Parmalee.
Portrait of Howard E. Drake.
Portrait of Howard G. Walker.
Portrait of Howard Huston.
Portrait of Howard Turner Barnes.
Portrait of Howard Waters Doughty.
Portrait of Howard Watsos Ambruster.
Portrait of Hugh S. Taylor.
Portrait of Hugo E. Heissler.
Portrait of Hugo Schlatter (d. 1935).
Portrait of Hugo Schweitzer (1861–1917).
Portrait of I. J. R. Muurling holding a journal.
Portrait of Ira D. Bertolet.
Portrait of Ira P. MacNair.
Portrait of Ira Remsen. In 1879, along with his research partner Constantin Fahlberg, he discovered the artificial sweetener saccharin. Remsen was also the second president of Johns Hopkins University.
Portrait of Irving Hochstadter.
Portrait of Irving Hochstadter.
Portrait of Irving Hochstadter.
Portrait of Irving Laucks.
Portrait of Ivan Ostromislensky.
Portrait of J. A. S. Rodda. It is noted on the photograph that Rodda was an employee of the Upjohn Company.
Portrait of J. A. Singmaster.
Portrait of J. Bob Roberts.
Portrait of J. Bryte Barnitt.
Portrait of J. Clarke Cassidy.
Portrait of J. Edgar Bowman.
Portrait of J. F. C. Hageus.
Portrait of J. Howard Wainwright.
Portrait of J. L. Schroeder.
Portrait of J. Lorenz Sporer.
Portrait of J. R. Suydam, Jr.
Portrait of J. Shorkley Klein.
Portrait of J. T. Richards sitting at a desk.
Portrait of J. Tenney Mason.
Portrait of J. W. H. Randall.
Portrait of J. W. Orelup.
Portrait of J. W. Paisley.
Portrait of J. W. Van Gorkom.
Portrait of J. Warren Kinsman, an employee of DuPont. The photograph was taken around 1930.
Portrait of Jacob F. Schoellkopf.
Portrait of Jacob Hasslacher.
Portrait of Jacob Hasslacher.
Portrait of Jacques Loeb.
Portrait of Jacques Wolf.
Portrait of James A. Barr.
Portrait of James A. Rafferty (1886–1951).
Portrait of James Augustus Branegan.
Portrait of James C. White. It is noted on the photograph that White was president of the Tennessee Eastman Corporation.
Portrait of James G. Vail.
Portrait of James H. McGraw.
Portrait of James H. Stebbins, Jr. (d. 1932).
Portrait of James Hartley Beal.
Portrait of James Kendall.
Portrait of James L. Coker, Jr.
Portrait of James L. Rodgers, Jr.
Portrait of James L. Rodgers, Jr.
Portrait of James M. Selden.
Portrait of James W. McLaughlin, president of the Bakelite Corporation.
Portrait of James W. Proctor.
Portrait of James Wilson, Secretary of Agriculture (1897–1914).
Portrait of Jasper Elliot Crane.
Portrait of Jerome Alexander.
Portrait of Joaquin Enrique Zanetti.
Portrait of John A. Just.
Portrait of John A. Killian.
Portrait of John Brown Francis Herreshoff (b. 1850).
Portrait of John C. Miner, Jr.
Portrait of John C. Van Haerst.
Portrait of John D. Pennock.
Portrait of John E. Jackson.
Portrait of John E. Warner. It is noted on the photograph that Warner was an employee of Union Carbide.
Portrait of John Edgar Teeple (1874–1931).
Portrait of John F. Queeny outdoors with his dog.
Portrait of John F. Schulze.
Portrait of John H. Bachmeier.
Portrait of John H. Brickenstein.
Portrait of John H. Nield.
Portrait of John H. Voorhees.
Portrait of John J. Metelski.
Portrait of John Johnston.
Portrait of John K. Berresford.
Portrait of John L. Hurlburt.
Portrait of John L. Smith.
Portrait of John Loughlin.
Portrait of John M. Bellamy.
Portrait of John M. Lowe.
Portrait of John M. Peters.
Portrait of John Morris Weiss.
Portrait of John P. Marston.
Portrait of John R. M. Klotz.
Portrait of John Stauffer.
Portrait of John Stauffer.
Portrait of John T. Manson.
Portrait of John Theodore Enequist.
Portrait of John Townsend Baker.
Portrait of John Tyndall (1820–1893).
Portrait of John Van Nostrand Dorr.
Portrait of John Van Nostrand Dorr.
Portrait of John William Hornsey.
Portrait of John William Mallet (1832–1912).
Portrait of Jokichi Takamine.
Portrait of Jonathan Berlinicke.
Portrait of Joseph Albert.
Portrait of Joseph Fank Geisler (b. 1860).
Portrait of Joseph Francis Xavier Harold (1874–1940).
Portrait of Joseph George Davidson.
Portrait of Joseph George Davidson.
Portrait of Joseph H. Cohen.
Portrait of Joseph J. Frank.
Portrait of Joseph Merritt Matthews (1874–1931).
Portrait of Joseph Prince Remington.
Portrait of Joseph W. Spiselman.
Portrait of Joseph William Richards (1864–1921).
Portrait of Judson Albert de Cew.
Portrait of Julius A. Nieuwland.
Portrait of Julius Culmann.
Portrait of Julius Oscar Stieglitz.
Portrait of K. F. Griffith. The name on the photograph was annotated to read "K. F. Griffith(s, Jr.)."
Portrait of Karl Henry Fulton.
Portrait of Karl L. Ford.
Portrait of Karl M. Herstein.
Portrait of Karl Pomeroy McElroy.
Portrait of Kaufman George Falk (b. 1880).
Portrait of Kenneth C. D. Hickman (b. 1896).
Portrait of Kenneth G. MacKenzie.
Portrait of Kenneth H. Ray.
Portrait of Kenneth H. Ray with unidentified men.
Portrait of Kenneth H. Ray with an unidentified man taking notes.
Portrait of L. A. Yerkes.
Portrait of L. F. Loutrel.
Portrait of L. G. Jenness.
Portrait of L. M. Phelps.
Portrait of L. W. Haskell.
Portrait of Lafayette Denton Vorce.
Portrait of Lauren B. Hitchcock.
Portrait of Lawrence Bristol.
Portrait of Lawrence E. Barringer.
Portrait of Lawrence Fleet.
Portrait of Lawrence Fleet with the Chemists' Club emblem.
Portrait of Lawrence W. Bass.
Portrait of Lawson Valentine Pulsifer.
Portrait of Lee H. Clark.
Portrait of Leigh I. Holdredge.
Portrait of Leland L. Summers.
Portrait of Leo Hendrik Baekeland, inventor of Bakelite, the first fully synthetic plastic.
Stable and inert, Bakelite could be molded or machined into an infinite variety of shapes. It was also the first plastic to cleanly break from nature. Earlier semi-synthetic plastics like celluloid imitated natural products like ivory or linen. But the glossy dark Bakelite was like nothing else in the world.
This breakthrough was achieved in 1907 by chemist Leo Baekeland, who subjected formaldehyde and a phenolic compound distilled from coal tar to high heat and pressure. Used as an electrical insulator, Bakelite replaced shellac, a resin made from the secretions of a beetle. Because of its high resistance to heat, Bakelite could be used in factories and motor vehicles. As a replacement for ivory, wood, and metal, Bakelite was soon found in such consumer goods as radios, jewelry, tobacco pipes, and billiard balls.
Portrait of Leo Hendrik Baekeland, inventor of Bakelite, the first fully synthetic plastic.
Stable and inert, Bakelite could be molded or machined into an infinite variety of shapes. It was also the first plastic to cleanly break from nature. Earlier semi-synthetic plastics like celluloid imitated natural products like ivory or linen. But the glossy dark Bakelite was like nothing else in the world.
This breakthrough was achieved in 1907 by chemist Leo Baekeland, who subjected formaldehyde and a phenolic compound distilled from coal tar to high heat and pressure. Used as an electrical insulator, Bakelite replaced shellac, a resin made from the secretions of a beetle. Because of its high resistance to heat it could be used in factories and motor vehicles. As a replacement for ivory, wood, and metal, Bakelite was soon found in consumer goods such as radios, jewelry, tobacco pipes, and billiard balls.
Portrait of Leo M. Christensen.
Portrait of Leo Wallerstein.
Portrait of Leon N. Adler.
Portrait of Leon R. Whitcomb.
Portrait of Leon V. Quigley.
Portrait of Leonard T. Beale.
Portrait of Leonard Wickenden.
Portrait of Leopold Ruzicka (1887–1976). Ruzicka was awarded the Nobel Prize in Chemistry in 1939.
Portrait of Lester S. Bacharach.
Portrait of Lester S. Bacharach.
Portrait of Levi B. Shipley.
Portrait of Lewis Earle Saunders.
Portrait of Lewis H. Marks.
Portrait of Lewis H. Marks.
Portrait of Lincoln T. Work.
Portrait of Lincoln T. Work.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work with an unidentified man at the Chemists' Club in New York City.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work with a gavel at the Chemists' Club in New York City.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work speaking at the Chemists' Club in New York City.
Portrait of Lincoln T. Work with a gavel and gavel box at the Chemists' Club in New York City.
Portrait of Lincoln T. Work at the Chemists' Club, standing with the Chemists' Club emblem.
Portrait of Lindsley Loring.
Portrait of Linn Bradley.
Portrait of Lloyd Van Doren.
Portrait of Lothair S. Kohnstamm.
Portrait of Louis A. Dreyfus.
Portrait of Louis A. Voorhees.
Portrait of Louis Agnello.
Portrait of Louis B. Fortner (b. 1859).
Portrait of Louis Cleveland Jones.
Portrait of Louis Edward Bisch.
Portrait of Louis J. Curtman.
Portrait of Louis M. Rossi.
Portrait of Louis Milton Gill (b. 1898).
Portrait of Louis Pasteur. Pasteur was a French chemist who conducted breakthrough work in the understanding of causes and prevention of disease. He developed the method known as pasteurization, whereby milk and wine were heated to eliminate bacteria.
Portrait of Louis Quarles.
Portrait of Louis Weisberg.
Portrait of Lucius Pitkin.
Portrait of Ludwig Saarbach.
Portrait of Lyman Chalkey, Jr.
Portrait of Lynn Watt. It is noted on the photograph that Watt was an employee of Monsanto.
Portrait of M. A. Rosanoff.
Photogravure of M. E. Chevreul ((1786–1889), a French chemist who pioneered research in fatty acids and color theory.
Portrait of M. H. Haertel.
Portrait of M. J. Lyster.
Portrait of M. W. Bingham.
Portrait of Mahlon G. Milliken.
Portrait of Mahlon J. Rentschler (b. 1882). It is noted on the photograph that Rentschler was an employee of Barium and Chemicals, Inc.
Portrait of Marcus A. Gordon.
Portrait of Marcus Frieder.
Portrait of Marion Eppley (b. 1883).
Portrait of Marshall C. Lefferts.
Portrait of Marshall Ward.
Portrait of Martin E. Waldstein.
Portrait of Maurice F. Schlesinger.
Portrait of Max Wallerstein.
Portrait of Maximilian Toch.
Portrait of Maximilian Toch.
Portrait of Medley G. B. Whelpley.
Portrait of Michael Stiegel.
Portrait of Milton C. Whitaker.
Portrait of Milton F. Schaak.
Portrait of Milton Whitney
Portrait of Milton Whitney
Portrait of Monroe E. Spaght.
Portrait of Montague Sterling.
Portrait of Noah Van Cleef.
Portrait of Noel Statham.
Portrait of Norman A. Shepard.
Portrait of Norman Lee Smith.
Portrait of Norman Lee Smith.
Portrait of Oscar Nelson.
Portrait of Oscar Spitzer.
Portrait of Oscar W. Palmenberg.
Portrait of Oswin W. Willcox.
Portrait of P. A. Pfeiffer.
Portrait of P. B. Sadtler.
Portrait of P. L. Sharpless.
Portrait of Paul Ingold Murrill.
Portrait of Paul J. Rosenheim.
Portrait of Paul L. Salzberg, an employee of E. I. du Pont de Nemours and Company.
Portrait of Paul Poetschke.
Portrait of Paul Van Cleef.
Portrait of Perley S. Wilcox. It is noted on the photograph that Wilcox was chairman of the board of the Eastman Kodak Company, Tennessee Eastman Corporation.
Portrait of Philip G. Munsford.
Portrait of Philip Newton.
Portrait of Pope Yeatman.
Portrait of Pope Yeatman.
Portrait of R. F. Steward.
Portrait of R. Norris Shreve.
Portrait of R. P. Russell and unidentified woman.
Portrait of R. W. Seabury.
Portrait of Ralph H. Muller.
Portrait of Ralph W. Webster.
Portrait of Raymond C. Whitman.
Portrait of Raymond Szymanowitz.
Portrait of Reed P. Rose.
Portrait of Reginald C. Woodcock.
Portrait of Reston Stevenson.
Portrait of Richard C. Tolman.
Portrait of Richard George Gottlob Moldenke (1864–1930).
Portrait of Richard L. Quinn.
Portrait of Richard O. Roblin.
Portrait of Richard Shelddrick.
Portrait of Richard Von Foregger.
Portrait of Richard Zeller.
Portrait of Robert C. Schuepphaus.
Portrait of Robert E. Milligan.
Portrait of Robert E. Wilson.
Portrait of Robert H. Polack.
Portrait of Robert H. Van Sant.
Portrait of Robert J. Quinn.
Portrait of Robert J. Winshnick.
Portrait of Robert Lindley Murray. It is noted on the photograph that Murray was vice president in charge of development and research at Hooker Electrochemical Company, Niagara Falls, New York.
Portrait of Robert R. Rust.
Portrait of Robert R. Williams.
Portrait of Robert R. Williams.
Portrait of Robert Schwarz.
Portrait of Roger J. Williams.
Portrait of Roger N. Wallach.
Portrait of Rosalyn S. Yalow. Yalow was awarded the 1977 Nobel Prize in Medicine or Physiology "for the development of radioimmunoassays of peptide hormones."
Portrait of Roy E. Wiley.
Portrait of Roy Mackay Meiklejohn.
Portrait of Rudolph Seldner.
Portrait of Rudolph Zinsser.
Portrait of Russell Wellman Moore.
Portrait of S. B. Penick.
Portrait of S. B. Tuwiner.
Portrait of S. F. Spangler.
Portrait of Salmon W. Wilder.
Portrait of Salmon W. Wilder.
Portrait of Samuel M. Monypenny.
Portrait of Samuel Newmark.
Portrait of Samuel Philip Sadtler (1847–1923). Sadtler was founding president of the American Institute of Chemical Engineers and began the Philadelphia-based chemical consulting firm Samuel P. Sadtler & Son.
Portrait of Samuel Schmucker Sadtler, son of Samuel Philip Sadtler. The father and son began the Philadelphia-based chemical consulting firm Samuel P. Sadtler & Son in 1901.
Portrait of Samuel William Wiley.
Portrait of Sanford H. Steele.
Portrait of Sheldon G. Warner.
Portrait of Sherburne H. Wightman.
Portrait of Stephen L. Tyler.
Portrait of Stephen Roy Morey.
Portrait of Sterling Temple.
Portrait of Sydney Harold Thomson.
Portrait of T. C. Oliver.
Portrait of T. Crisp Sanderson.
Portrait of Theo. Weicker.
Portrait of Theodore E. Smith.
Portrait of Theodore P. Walker.
Portrait of Theodore Tonnele.
Portrait of Theodore William Richards (1888–1928) in the laboratory. Richards was born in Germantown, Pennsylvania, and won the Nobel Prize in Chemistry in 1914. He is best known for his exact determinations of the atomic weights of more than 30 chemical elements.
Portrait of Thomas A. Wright.
Portrait of Thomas Midgeley, Jr. (1889–1944). Midgeley developed both tetraethyl lead, a gasoline additive that reduced engine "knocking," and chlorofluorocarbons (CFCs).
Portrait of Thomas Thomson, MD, F.R.S.
Portrait of Vincent F. Waters (right) and C. R. Hochtel (left).
Portrait of Vladimir V. Messer.
Portrait of W. A. Stiefel.
Portrait of W. Acheson Smith.
Portrait of W. B. Morton.
Portrait of W. B. Newkirk.
Portrait of W. C. Peyton.
Portrait of W. C. Spruance, Jr.
Portrait of W. D. Turner.
Portrait of W. H. Pretsch.
Portrait of W. H. Ross.
Portrait of W. H. Tisdale.
Portrait of W. Hastings Swenarton.
Portrait of W. J. Webster.
Portrait of W. Perkin, Jr.
Portrait of W. Perkin, Jr.
Portrait of W. Perkin, Jr.
Portrait of W. R. Moorhouse.
Portrait of W. Schmidtman.
Portrait of Waldo L. Semon.
Portrait of Walter A. Nivling.
Portrait of Walter August Schmidt.
Portrait of Walter E. Rowley.
Portrait of Walter Murray Sanders.
Portrait of Warren Neal Watson.
Portrait of Wilbur N. Wilkinson.
Portrait of Wilfred Welday Scott.
Portrait of Willard E. Watkins.
Portrait of William F. Munn.
Portrait of William H. Parker.
Portrait of William H. Vom Rath.
Portrait of William H. Walker.
Portrait of William Henry Mills.
Portrait of William Henry Perkin, developer of the first synthetic dye, mauve.
Portrait of William Henry Perkin, developer of the first synthetic dye, mauve.
Portrait of William Jay Schieffelin.
Portrait of William L. Voigt.
Portrait of William Louis Prager.
Portrait of William M. Rand. It is noted in the photograph that Rand was an employee of the Monsanto Chemical Corporation.
Portrait of William Moore.
Portrait of William Moorhead Vermilye.
Portrait of William Mueller.
Portrait of William Prescott.
Positive Ion-Emission Apparatus, Fixed Nitrogen Research Laboratory
Positive Ion-Emission Apparatus, Fixed Nitrogen Research Laboratory
Positive Ion-Emitting Device, Fixed Nitrogen Research Laboratory
Positive Ion-Emitting Device, Fixed Nitrogen Research Laboratory
Comparison of Fertilizers, Fixed Nitrogen Research Laboratory
Radioactive containers.
Reaction Bombs for Testing Catalysts, Fixed Nitrogen Research Laboratory
Reading Temperature Inside Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Rotary Filter for Extracting Cyanamide from Calcium Cyanamide, Fixed Nitrogen Research Laboratory
Royster stoves at the No. 2 experimental blast furnace.
Royster stoves at the No. 2 experimental blast furnace.
Shaking machine designed at Arlington Farm Laboratory.
Silica Gel Absorber for Nitrogen Dioxide, Fixed Nitrogen Research Laboratory
Small-scale, continuous granulation equipment.
Effect of boric acid on nodule production on the roots of soybeans grown under pure culture conditions. From left to right: sterile, no boric acid; inoculated, no boric acid; inoculated, boric acid 1:2,500,000; inoculated, boric acid 1:500,000; inoculated, boric acid 1:100,000.
Effect of boric acid on nodule production on the roots of soybeans grown under pure culture conditions. From left to right: sterile, no boric acid; inoculated, no boric acid; inoculated, boric acid 1:2,500,000; inoculated, boric acid 1:500,000; inoculated, boric acid 1:100,000. The image is of the second exposure of the study.
Apparatus used for the spectroscopic study of the mechanism of the fixation of nitrogen in an electric arc.
Steel Corrosion Laboratory at the Fixed Nitrogen Research Laboratory. Shown are the constant volume compensometer, thermocouple swtiches and potentiometer, flow meter, and valve blocks heated by electric lights.
Steel Corrosion Laboratory at the Fixed Nitrogen Research Laboratory. Pictured is the thermostat used in steel corrosion tests to maintain ammonia bubblers at 65 degrees Centigrade.
Apparatus for the study of the structure of molecules by means of the Raman effect using a three-glass-prism Steinheil spectrograph.
Stirring machine designed at Arlington Farm Laboratory.
Storage Piles of Greensand, Leucite, Coke, and Limestone, Fixed Nitrogen Research Laboratory
Synthetic Ammonia Plant Model, Fixed Nitrogen Research Laboratory
Tapping Slag from the Experimental Blast Furnace, Fixed Nitrogen Research Laboratory.
Tapping Slag from Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Tapping Slag from Experimental Blast Furnace, Fixed Nitrogen Research Laboratory
Travis Hignett and ? Royster watching the tapping of slag from the experimental blast furnace at the Fixed Nitrogen Research Laboratory.
Tapping slag from the experimental blast furnace at the Fixed Nitrogen Research Laboratory.
Travis Hignett and ? Royster watching the tapping of slag from the experimental blast furnace at the Fixed Nitrogen Research Laboratory.
"The Storage Piles"
Thermostat and Apparatus for Measuring Gas, Fixed Nitrogen Research Laboratory
Thermostat and Apparatus for Measuring Gas, Fixed Nitrogen Research Laboratory
Thermostat for Measuring Rates of Reaction at the Fixed Nitrogen Research Laboratory.
"Thermostated Agitating Device," Fixed Nitrogen Research Laboratory
"Thermostated Agitating Device," Fixed Nitrogen Research Laboratory
Trays Used to Expose Fertilizer to Humidity in Air Control Room
U. S. Department of Agriculture Exhibit, Chemical Industries Exposition, New York
U. S. Department of Agriculture Exhibit, Chemical Industries Exposition, New York
Exhibit developed by the Fixed Nitrogen Research Laboratory, U.S. Department of Agriculture.
Mr. Olmstead with an ultrasonic oscillator. The 1,800-volt D.C. motor generator set (220v A.C.–1800v D.C.), pliatron panel, driving circuit, and bath containing the piezo-electric quartz crystal are shown.
Ultrasonic oscillator shaking a soil suspension. The driving transformer and the oil bath containing the piezo-electric quartz crystal are shown.
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified Apparatus
Unidentified building.
Unidentified building.
Unidentified Building
Unidentified Group Photograph
Unidentified Group Photograph
Unidentified Group Portrait
Unidentified Man at Desk
Unidentified Man at the Fixed Nitrogen Research Laboratory.
Unidentified Man at the Fixed Nitrogen Research Laboratory.
Unidentified Photograph at the Fixed Nitrogen Research Laboratory.
Unidentified Photograph at the Fixed Nitrogen Research Laboratory.
Unidentified Photograph at the Fixed Nitrogen Research Laboratory.
Unidentified Photograph at the Fixed Nitrogen Research Laboratory.
Unidentified Photograph from the Fixed Nitrogen Research Laboratory
Unidentified Photograph of Porch
Unidentified Photograph of Women
Unidentified woman standing behind a table.
Urea Plant Autoclave and Still, Fixed Nitrogen Research Laboratory
Urea Plant, Fixed Nitrogen Research Laboratory
Urea Plant, Fixed Nitrogen Research Laboratory
Urea Plant, Fixed Nitrogen Research Laboratory
Urea Plant, Fixed Nitrogen Research Laboratory
V. L. Gaddy with Compressors in Urea Plant, Fixed Nitrogen Research Laboratory
A worker with containers of ferro-vanadium at the Vanadium Corporation of American plant in Cambridge, Ohio.
Warburg-Barcroft microrespiration apparatus in the laboratory used to study bacterial nitrogen fixation.
Water-Gas Generator, Fixed Nitrogen Research Laboratory
White Canyon Plant, Vanadium Corporation of America, in Utah in 1953.
William A. Jackson and a Geiger Counter.
Dr. Hendricks demonstrating the apparatus used for X-ray studies of catalysts for nitrogen fixation.