TABLE OF CONTENTS. 



PAGES 



CHAPTER I. PROTOPLASM AND THE CELL 1-12 



Composition of Protoplasm, pp. 1-3. Structure of the Cell, 

 pp. 4-8. Cell-division, pp. 9-12. Literature, p. 12. 



CHAPTER II. THE SUBKINGDOM PROTOZOA 13-40 



The Class Rhizopoda, pp. 14-24. The Class Sporozoa, pp. 24- 

 28. The Class Flagellata, pp. 28-33. The Class Infusoria, 

 pp. 33-38. Synoptical Classification, pp. 38, 39. Literature, 

 pp. 39, 40. 



CHAPTER III. THE SUBKINGDOM METAZOA 41-62 



Individuality of the Metazoa, pp. 41-42. Sexual Reproduction, 

 pp. 42-51. The Segmentation and Early Development of 

 the Ovum, pp. 51-58. Non-sexual Reproduction of the 

 Metazoa, pp. 58-60. Alternation of Generations, pp fi^ 62. 

 Literature, p. 62. 



CHAPTER IV. TRICHOPLAX, THE DICYEMID.E AND THE 



ORTHONECTIDA 63-67 



Trichoplax, pp. 63, 64. The Dicyemidse, pp. 64, 65. The Or- 

 thouectida, pp. 65-67. Literature, p. 67. 



CHAPTER V. THE TYPE CGELENTERA 68-119 



The Subtype Porifera, pp. 69-76. The Subtype Cnidaria, pp. 

 76-115. The Class Hydromedusse, pp. 78-97. The Class 

 Scyphomedusae, pp. 97-104. The Class Anthozoa. pp. 104- 

 115. Synoptical Classification, pp. 115-117. Literature, 

 pp. 118, 119. 



CHAPTER VI. THE CTENOPHORA 120-126 



Description of the Group, pp. 120-126. Synoptical Classifica- 

 tion, p. 126. Literature, p. 126. 



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