CONTENTS. 



PAET I. 



CHAP. 



I. THE CELL AND SIMPLE ANIMAL TISSUES. THE CLASSI- 

 FICATION OP ANIMALS . . . . 

 II. PROTOZOA, OR SINGLE-CELLED ANIMALS . 



III. MESOZOA, SPONGES, CCELBNTBRATES, AND ECHINODERMS 



IV. WORMS (vermes). PLATYHELMINTHBS OR FLAT-WORMS 



V. WORMS (vermes) — ConUtmed. nemathelminthes or 



ROUND-WORMS. . . . . . 



VI. WORMS (vermes) — Gontinued. Annelida or segmented 



WORMS ..... 



VII. ARTHROPODA or JOINTED-LIMBED ANIMALS. (CRUSTACEA. 



MYRIAPODA, AND ARACHNOIDEA) 

 VlII. INSECTA OR HEXAPODA. (COLEOPTERA, HYMENOPTERA. 



LBPIDOPTERA, DIPTERA, THYSANOPTERA, HBMIPTERA 



■OKTHOPTERA, NEUROPTERA, APTERa) 

 IX. MOLLUSCA . . . 



3 



17 

 27 

 31 



56 



79 



86 



121 

 261 



