[172]. Annales de Chimie et de Physique, 3ème série, tom. xii, p. 320.

[173]. 15, Hanover Street, Hanover Square.

[174]. Bulletin Général de Thérapeutique, t. lii, p. 312.

[175]. L’Union Médicale, p. 175.

[176]. Less than an ounce of amylene was poured out, and it was not all used.

[177]. Medical Times and Gazette, 1857, vol. i, p. 84.

[178]. British Medical Journal, March 28th, 1857.

[179]. Bulletin Général de Thérapeutique, t. lii, p. 223.

[180]. Gazette Hebdomadaire, 1857, p. 164.

[181]. In the act of writing this last sentence, Dr. Snow was seized with his fatal illness. The sentence required, however, but the addition of a word or two, to render it complete.—[Editor.]