xiv GENERAL BIOLOGY 



chaeology, p. 498. Ethnology, p. 494. Ontogeny, p. 498. 

 3. The social organism, p. 500. Animism, p. 502. Social 

 integration, p. 507. Social conduct, p. 509. 



PRACTICAL EXERCISES. 



Study 60. Demonstration of functions of sonic of the principal parts 

 of the nervous system in the frog, p. 456. 



Study 61. Observations on certain activities of caterpillars, p. 472. 



Study 62. The case-building instincts of caddis worms, p. 477. 



Study 6 J. Experiments with trial and error in chicks, p. 481. 



Study 64. Survivals of animism in our own titnes, p. 504. 



APPENDIX. 



Preliminary outline and instructions, p. 513. Lenses, lighting, 

 etc., p. 513. Stage mounts, p. 518. Dissecting, p. 519. Draw- 

 ings, p. 520. 2. Materials for the practical exercises, p. 520. 3. 

 Key to the genera of Dytiscidce . p. 526. 



INDEX. 



Pages 531—542. 



PORTRAITS: Schultze, p. 8g; Pasteur, p. gT,; Von Baer, p. i'j4; 

 Linnaeus, p. 220; Agassiz, p. 224; Darwin, p. 277; Leeuwenhoek, p. 

 298; Mendel, p. 309; Aristotle, p. 470. 



ru 



