[ORFILA (Mathieu)]. - Lot 62

Lot n° 62
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[ORFILA (Mathieu)]. - Lot 62
[ORFILA (Mathieu)]. Demonstration of chemistry. (Paris; January 1840). M.A. 1 pp. in-folio (21 x 31 cm) Bearing the indication "Monsieur le Professeur Orfila me fait ce dessin et cette démonstration pendant mon premier examen de médecine, à Paris, en janvier 1840" this note written in Geneva on February 19, 1848. Mateo José Buenaventura Orfila y Rotger, known as Mathieu Orfila (1783-1853), naturalized French physician and chemist. Founder of forensic toxicology. Chemistry demonstration illustrated with a drawing. Orfila states: "Acid lime phosphate (assein cat ) is introduced into flask xx. The arsenic acid is decomposed by hydrogen gas, which forms water and hydrogen arsenic gas; this gas emerges at the z end of the tube in y. It is ignited, and immediately produces water and metallic arsenic: the latter is deposited on the porcelain plate A. B. The arsenic is deposited on the porcelain plate A.B., in the form of very thin, shiny brown spots with all the characteristics of arsenic".
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