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.]