[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.