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 some of the principal parts 



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



Study 6 1 . Observations on certain activities of caterpillars, p. 472. 

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

 Study 63. Experiments with trial and error in chicks, p. 481. 

 Study 64. Survivals of animism in our own times, 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 Dytiscidaz. p. 526. 



INDEX. 

 Pages 531 542. 



PORTRAITS: Schultze, p. 89; Pasteur, p. 93; Von Baer, p. 174; 

 Linnaeus, p. 220; Agassis, p. 224; Darwin, p. 277; Leeuwenlmek , p. 

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



