[52] Hilger and Lazarus, Compare also Schweitzer, Pharmaceut. Zeitg. 1898, p. 389.
[53] Ann. d. Chem. and Pharm. 1841, Vol. 41, p. 125.
[54] Ibid. Bd. 118, pag. 151.
[55] Berliner Chemische Berichte 1897, pag. 1839.
[56] Archiv f. experiment. Pathol. u. Pharmacol. 1895, Vol. 35, pag. 449.
[57] Ibid. 1896, Vol. 30, pag. 53.
[58] Ibid. 1896, Vol. 36, pag. 66.
[59] Ibid. 1888, Vol. 24, p. 101.
[60] Therapeut. Monatshefte 1890, p. 10.
[61] Semaine médicale 1893, p. 366.