Anselme PAYEN (1795-1871), chemist, discoverer of the first - Lot 73

Lot 73
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Anselme PAYEN (1795-1871), chemist, discoverer of the first - Lot 73
Anselme PAYEN (1795-1871), chemist, discoverer of the first enzyme. Autograph manuscript, 1 p. ¼ in-4 oblong numbered "8". Conclusions of an expertise for the court of assizes of the department of Oise. "In summary, we can present the following answers []: on the first question, in the absence of materials to be examined but according to the description of the analytical means employed by Mr. Chastaing, the sandstone pot must have contained copper compounds generally harmful to health. The dosage not having been made it is impossible to affirm that these compounds were in sufficient proportions to give death. On the second question, the tests indicated by Mr. Chastaing were insufficient to demonstrate the presence of phosphorus and sulfur, but the results of our experimental research prove that these two bodies in a free state really existed in the substance that remained in the small vial, that they were accompanied by gummy matter and traces of lead oxide [] ". Attached is a letter written in his name, with beautiful printed letterhead "Payen chemist manufacturer" (1829, on the sale of barrels of tar, tear in the margin).
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