X CONTENTS 



Page 



CHAPTER VIII 



Metabolism 32 



Definition — Food — Steps in metabolism — Ingestion — Digestion — Absorp- 

 tion — Circulation — Inspiration — Assimilation — Dissimilation — Secretion — 

 Excretion — Expiration — Elimination — Egestion — Respiration — Anabolism 

 and katabolism — Vitamins — Energy changes in metabolism — Uses of differ- 

 ent foods — Storage — Metabolism the central fact in life. 



CHAPTER IX 



Plants and Animals 40. 



Comparison between plants and animals — Biology — Differences between 

 plants and animals. 



CHAPTER X 



Growth and Reproduction. 43 



Growth cycles — Limit of size — Reproduction. 



CHAPTER XI 



Mitosis 46 



Normal cell division — Significance of mitosis — Amitosis — Continuity of cell 

 life and chromatin — Growth of the cell. 



CHAPTER XII 



Forms of Animals 51 



Asymmetry — Spherical, or universal, symmetry — Radial symmetry — 

 Bilateral symmetry — Metamerism — Appendages — Homology and analogy. 



CHAPTER XIII 



Behavior ^^ 



Stimuli— Direct response— Conductivity— Part played by the nervous sys- 

 tem — Physiological state. 



CHAPTER XIV 



Classification and Nomenclature 57 



Definition — Arrangement of groups of animals — Nomenclature. 



PART II 

 Protozoa 



CHAPTER XV 



Ameba 6^ 



Occurrence and appearance— Structure— Metabolism— Locomotion— Be- 

 havior — Reproduction. 



CHAPTER XVI 



6Q 

 Paramecium 



Occurrence— Structure— Metabolism— Locomotion— Behavior— Reproduc- 

 tion — Conjugation — Endomixis. 



