[97] _Archives des sciences physiques et naturelles_, Geneva, March, 1905, vol. xvii; _Archives de physiologie_, vol. iv, p. 245. [98] Laveran and Mesnil, _Trypanosomes et Trypanosomiases_, Paris, 1904, p. 328. [99] Paris, 1834, 4th edition, vol. ii, p. 118. [100] _Revue de métaphysique et de morale_, March, 1904. [101] _Année biologique_, vol. vii, p. 595. [102] _Revue occidentale_, July 1st, 1904, vol. xxx, p. 87. [103] Egger, “_Le moi des mourants_,” Revue philosophique, 1896, i, p. 27. [104] _Ibid._, pp. 303-307; v. also _Bulletin de l’Institut général phycholog._, 1903, p. 29. [105] Cicero, _Tusculanes_, chap, xxviii. [106] Rapport de M. Bienvenu-Martin à la Chambre des députés, Paris, 1903. [107] _L’Art de prolonger la vie humaine_ (French translation), Lausanne, 1809, p. 5. [108] A. Réville, _Histoire des religions_, vol. iii, Paris, 1889, p. 428. [109] A. Réville, _loc. cit._, p. 455. [110] _Comptes rendus de la Societé de Biologie_, 1899, p. 415. [111] _Deutsche medicin. Wochenschrift_, 1891, p. 1027. [112] _Die physiologisch-chemisch. Grundlagen d. Spermintheorie_, Berlin, 1898. [113] _British Medical Journal_, 1904; _Deutsche Mediz. Wochenschr._, 1904, Nos. 18-21. [114] _Die Lehre von d. Mortalitaet u. Morbilitaet_, 2nd edition, Jena, 1901. [115] _Medizinische Klinik_, 1905, No. 22. [116] _Die experimentelle Syphilisforschung_, Berlin, 1906, p. 82. [117] _Annales de l’Institut Pasteur_, 1900, pp. 369-413. [118] _Les sérums hemolytiques_, Lyon, 1903. [119] According to a recent publication of M. Ellenberger (_Archiv. f. Anatomie u. Physiologie, Physiologische Abtheilung_, 1906, p. 139), the cæca of the horse, pig and rabbit, play an active part in the digestion of vegetable matter, which is rich in cellulose. At the end of his treatise, Ellenberger insists that the vermiform appendix of the cæcum is not a rudimentary organ. The reason why the appendix can be removed in the case of man without disturbance to the functions of the body, is that this work can be performed by the Peyer’s patches of the intestine. The existence of the appendix is not necessary to the normal processes of the body, and is a real danger to health and sometimes to life. Comparative study of the cæca in birds shows that these organs are in process of degeneration. [120] _Archiv. für experimentelle Pathologie_, vol. xxviii, p. 311. [121] _Sixième Congrès de Chirurgie_, Paris, 1903, p. 86. [122] _Leçons sur les auto-intoxications_, Paris, 1886. [123] _Zeitschrift für Hygiene_, 1892, vol. xii, p. 88. [124] _Zeitschrift für klinische Medicin_, 1903, vol. xlviii, p. 491. [125] There is a summary of this question in Gerhardt’s work on intestinal putrefaction, in _Ergebnisse der Physiologie_, 3rd year, section 1, Wiesbaden, 1904, pp. 107-154. [126] _The A B C of our Nutrition_, New York, 1903; Dr. Regnault, Nov. 1, “L’art de manger,” _La Revue_, 1906, p. 92. [127] _Zeitschr. f. diatetische u. physikal. Therapie_, t. viii, 1904, 1905.