CONTENTS. 



PAGE 



INTRODUCTION ... ... 1 



CHAPTER I. 



APPLICATION OF THE FOREGOING PRINCIPLES TO THE LOWEST 

 ANIMALS . .... 18 



CHAPTER II. 

 MOLLURCA . . . .25 



CHAPTER III. 

 ANTS . .... .31 



CHAPTER IV. 

 BEES AND WASPS . . . . .143 



CHAPTER V. 

 TERMITES ..... . 198 



CHAPTER VI. 

 SPIDERS AND SCORPIONS . ... 204 



CHAPTER VIL 

 REMAINING ARTICULATA . . . 226 



CHAPTER VIII. 

 FISH . . . . . . . 241 



CHAPTER IX. 

 BATRACHIANS AND REPTILES ..... 254 



