CONTENTS 

 PART I. VERTEBRATE ZOOLOGY 



PAGE 



Preface ix 



CHAPTER 



I. The Chord ATE Phylum 3 



II. The Early Chordates H 



III. Cyclostomes 29 



IV. Fishes 35 



V. Amphibia 48 



VI. Reptilia 56 



VII. AvES 71 



VIII. :^Iammalia 76 



PART II. CO:^IPARATIVE MORPHOLOGY 



IX. Tissues of the Body 99 



X. Integumentary Structures 107 



XL Supporting Structures 125 



XII. Muscular System 175 



XIII. Digestive System 192 



XIV. Respiratory System 205 



XV. Vascular System 221 



XVI. The Urinogenital System 250 



XVII. Nervous System 271 



XVIII. Organs of Special Sense 300 



XIX. ]\Iechanics of Development 313 



XIU 



40240 



