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 (1851-1901), or his scientific jubilee, there was an imposing demonstration of esteem and regard organized in honour of the event. Representatives of all countries, academies, societies, universities, etc., were present at this great meeting of 24th November 1901. It was more like the vast gatherings of ancient times than one in these democratic days. It was held in the amphitheatre of the historic Sorbonne, and here Berthelot received addresses and a beautiful gold medal (by Chaplain), the latter being subscribed for by most of the chemists of the world. The medal (the author possesses a replica in bronze of this medal) has on its obverse side a portrait of Berthelot in profile, and the following words: "Marcellin Berthelot. La Synthèse Chimique. La Science Guide l'Humanité"; and the reverse side pictures the great chemist at his table, Truth illuminating him with a torch, while France, holding a flag, presents him with a laurel crown. The inscription is as follows: "1851. Pour la Patrie et la Verité. 1901."

Not content with his great discoveries in every department of pure and applied chemistry, Berthelot produced the following unique and erudite books on