XVI CONTENTS. 



CHAPTBE I-I. Tim 



Polypifera. Hydroida — Zoophytes, or Polyps— Btyozoa — Acaleph* — 

 BoMnidae — Holothuridse ...... 195 



CHAPTER in. 

 Mollusoa — Gasteropoda— Collecting Specimens . . .253 



CHAPTER JV. 

 Articulata. Entozoa — Annelida— Crustacea— Arachnidas . . 270 



CHAPTER V. 

 Articulata. Insects — Acarina ...... 286 



CHAPTER VI. 



Animal Structure. Physiology — Histology — Cell Theory — Growth of 

 Tissues — Special Tissues — Skin, Cartilage, Teeth, Bone, <fec. . 343 



CHAPTER VII. 



Vegetahle Structure — Vital and Chemical Characteristics — The Vege- 

 table Cell — Fungi — Mosses — Algae — Vojvox — ^Desmidaceae — Struc- 

 ture of Plants — Fungoid Diseases — Adulteration of Articles used 

 for Food — Preparation for Microscopic Examination — Cutting Sec- 

 tions-^^Warington's Microscope — ^Magnifying Power of the Bye — 

 CondlUSiOn ........ 394 



