[335]. Brodie, Phil. trans. 1812.

[336]. This is an important characteristic, since all the metallic poisons yield an abundant precipitate, either black, yellow, or red, on the addition of one or other of the alkaline hydro-sulphurets.

[337]. “Genera Crustaceorum et Insectorum,” tom. 2, p. 220. The London College in their present pharmacopœia refer this insect to the genus Lytta, an error which will be corrected in the future edition.

[338]. System of Chemistry, edit. 5, vol. iv. p. 436. See also Ann. de Chim. lxxvi. p. 308.

[339]. Page [129], note.

[340]. Homberg, Mem. Par, 1692.

[341]. Ann. de Chim. xxvii, 87.

[342]. The earliest account we have of this substance having been used in medicine is to be found in the seventh volume of Haller’s collection of Theses, relating to the history and cure of diseases. The original dissertation is entitled “De Phosphori loco Medicamenti adsumpti virtute medica, aliquot casibus singularibus confirmata,” Auctore J. Gabi, Mentz.

[343]. Memoirs of the Society of Emulation at Paris.

[344]. See Nicholson’s Journal iii, 85.