[167] Materia Med. Americ. Erlangæ, 1787, p. 86. Schöpf was physician to German troops fighting in the War of Independence.

[168] Collections for an Essay on Mat. Med. of U.S. Philad. 1798, 31.

[169] Vol. iii. 273.

[170] Figured by Power, Proc. American Phar. Assoc., 1877. 420-433.

[171] American Journ. of Pharm. xvi. (1868) 1-10.

[172] Saunders in Am. Journ. of Pharm. xvi. 75.

[173] Ueber Podophyllin (Dissertation), Giessen, 1869.

[174] Am. Journ. of Pharmacy, xxxv. (1863) 97.

[175] L. cit., also Am. Journ. of Pharm. (1878) 370.

[176] Géogr. botanique, ii (1855) 649.