[128] _Du Cap au lac Nyassa_, Paris, 1897, pp. 291-294. [129] Gaffky and Paak, in _Arbeiten d. k. Gesundheitsamtes_, vol. vi, 1890. [130] _Annales de l’Institut Pasteur_, 1903. [131] Cormouls-Houlès, _Vingt-sept années d’agriculture pratique_, Paris, 1899, pp. 57-58. [132] _British Medical Journal_, 1897, Dec. 25th, p. 1898. [133] _Comptes rendus de la Soc. de Biologie_, 1906, March 17th. [134] Dr. Combe, _L’auto intoxication intestinale_, Paris, 1906. This valuable work contains much useful information on the subject. [135] Grundzach, _Zeitschrift für klinische Medezin_, 1893, p. 70; Schmitz, _Zeitschrift für physiologische Chemie_, 1894, vol. xix, p. 401; Singer, _Therapeutische Monatshefte_, 1901, p. 441. [136] _Journal für praktische Chemie_, 1882, vol. xxvi, p. 43. [137] _Archiv. für experimentelle Pathologie_, 1883, vol. xvii, p. 442. [138] In the English authorised version as in the translation of Osterwald the word “butter” is used in place of “soured milk.” Professor Metchnikoff follows the translation given by Ebstein in his work on the Medicine of the Old Testament. [139] _Presse médicale_, 1904, p. 619. [140] “An authentic narrative of the loss of the American brig _Commerce_ wrecked on the western coast of Africa in the month of August, 1815, with an account of the sufferings of the surviving officers and crew, who were enslaved by the wandering Arabs on the African desert or Zaharah; and observations historical, geographical, etc.” by James Riley. Hartford, S. Andrus and Son, 1854. [141] _Arbeiten a. d. k. Gesundheitsamte_, 1889, vol. v, pp. 297-304. [142] See Grasberger and Schattenfroh, _Archiv. für Hygiene_, 1902, vol. xlii, p. 246. [143] _Annales de l’Institut Pasteur_, 1902, p. 65. [144] _Revue médicale de la Suisse romande_, 1905, p. 716. [145] _Comptes rendus de la Soc. Biologique_, March 17th, 1906. [146] _Annales de l’Institut Pasteur_, 1906, p. 977. [147] Soured milk can be taken at any time of the day, with or in between meals. [148] _Jahrbuch für Kinderheilkunde, N. F. 12 Ergænsungsheft_, 1900. [149] _Annales de l’Institut Pasteur_, 1905, p. 295; _Tribune médicale_, Feb. 24th, 1906. [150] _La nature humaine et la philosophie optimiste_, Paris, 1904. [151] _Archiv. f. Anat. u. Physiol., Anatom. Abtheil_, 1903, p. 205. [152] _L’univers et la vie_, p. 592. [153] Huxley, _Man’s Place in Nature_. Collected Essays, vol. vii, p. 54. [154] _Ibid._, p. 60. [155] _Ibid._, p. 62. [156] _Ibid._, p. 67. [157] Ménégaux, _Les Mammifères_, p. 24. [158] Darwin, _Expression of the Emotions in Man and Animals_, 1873, p. 67. [159] _Biologisches Centralblatt_, 1904, p. 475. [160] J. de Fontenelle, _Nouveau manuel complet des nageurs_, Paris, 1837, p. 2. [161] _La natation et les bains_, Paris, 1887. [162] Quoted by M. Pitres in _Leçons cliniques sur l’hystérie_, 1891, vol. i. [163] Bourneville et Regnard, _Iconographie photographique de la Salpétrière_, 1879-1880, vol. iii, p. 50.