Y 



liTL<^ t 



7^9 



TABLE OF CONTENTS 



PAGE 



Introduction xi 



PART I 



§ I, Object and Line of Argument i 



§11. The Outer Body Form . . . • ii 



§ III. The Appendages 26 



§ IV. The Musculature 52 



§ V. The Nervous System 67 



§ VI. The Sensory Organs 84 



§ VII, The Alimentary Canal 112 



§ VIII. The Circulatory System 117 



§ IX. The Excretory and other Glands 124 



§ X. Reproduction 140 



§ XI. Development — The Nauplius 148 



. B 



A^br^^\rs,^^^ «»« * TTi 



