Summer 2013, Vol. 31, No. 2

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In this issue of Chemical Heritage we explore the history of poison ivy, a despised plant with, perhaps, some redeeming qualities. We delve into CHF’s image archives to examine the history of the Hercules Powder Company, which went from making explosives to building rockets. And we look at the parallel lives of Dmitri Mendeleev and Julius Lothar Meyer to figure out why one is a household name and the other is now mostly forgotten. As always we offer treasures from CHF’s collections, book and museum reviews, and more. Enjoy!