CONTENTS. 



INTRODUCTION. 



PAGE 



CHAPTER I. 



General Survey of the Animal Kingdom. 



Invertebrate Metazoa — ^Vertebrate Metazoa — General Classifica- 

 tion of the Animal Kingdom, . . I 



CHAPTER II. 



The Fdnctions of Animals (Physiology). 



Division of Labour — History of Physiology — Chief Functions 

 in a Higher Organism — Modern Conception of Protoplasm 

 — Anabolism and Katabolism, . . . .10 



CHAPTER III. 



The Elements of Structure (Morphology). 



External Form — Organs — Differentiation and Integration — 

 Correlation of Organs — Homologous Organs — Change 

 of Function — Substitution of Organs — Rudimentary Organs 

 — Classification of Organs — Tissues — Cells, . . .25 



