TABLE OF CONTENTS 



CHAPTER PAGE 



I. INTRODUCTION 2 



II. PROTOPLASM : ITS MORPHOLOGY AND PHYSIOL- 

 OGY 8 



III. THE ANIMAL CELL : ITS MORPHOLOGY ANC 



PHYSIOLOGY 1 8 



IV. FROM THE SIMPLE CELL TO THE COMPLEX 



ANIMAL 27 



V. CELLULAR DIFFERENTIATION : TISSUES 40 



VI. GENERAL ANIMAL FUNCTIONS AND THEIR AP- 

 PROPRIATE ORGANS 59 



VII. PROMORPHOLOGY 83 



VIII. INDIVIDUAL DIFFERENTIATION AND ADAPTATION 92 



IX. A GENERAL PREVIEW OF THE ANIMAL KINGDOM. 135 



X. THE PROTOZOA 142 



XL THE PORIFERA 156 



XII. THE CCELENTERATA 165 



XIII. THE UNSEGMENTED " WORMS " 183 



XIV. THE ECHINODERMATA 2OO 



XV. THE ANNULATA: SEGMENTED "WORMS"... 216 



XVI. THE MOLLUSCA 234 



XVII. THE ARTHROPODA 261 



XVIII. THE CHORDATA: PROTO-VERTEBRATA 308 



XIX. THE CHORDATA : VERTEBRATA 312 



XX. PISCES 355 



XXI. AMPHIBIA 372 



XXII. REPTILIA 380 



XXIII. AVES 394 



XXIV. MAMMALIA 427 



XXV. GENERAL SUMMARY: A REVIEW OUTLINE 45 l 



APPENDIX. SUGGESTIONS TO TEACHERS 455 



INDEX 47 



xii 



