OONTElsITS. 



PAQE 



INTEODUCTION 1 



Definition of Zoology 1 



Morphology 5 



Organs and tiieir Functions 8 



Correlatiou of Orgijus. . . t 9 



Adaptation of Oig ms 10 



Analogy and Homology 13 



Physiology 13 



Psychology 13 



Reproduction 13 



Embryology 13 



Classification ... 13 



Zoogeography 16 



CHAPTER I. Branohl. Protozoa 17 



II. " 3. PORIFBRA (Sponges) 43 



III. " 3. CtBLENTKRATA (Hydroids, Jelly-fishes, 



and Polyps) 51 



IV. " 4. ECHiNODERMATA (Crinoids, Starfish, 



Sea Urchins, etc 96 



V. " 5. Vermes (Worms) 138 



VI. " 6. MoLLDSCA (Bivalves, Snails, Cuttles). . . 330 



VII. " 7. Arthropoda (Crustaceans and Insects) 365 



VIII. " 8. Vbrtebrata 369 



IX. Comparative Anatomy op Organs 631 



Organs of Digestion, the Mouth and Teeth. . . 631 



Organs of Circulation 635 



Organs of Respiration 637 



The Nervous System 638 



Organs of Sense 640 



