CONTENTS. 



CHAPTER I. 

 HAIRS, FEATHERS, AND SCALES . 



CHAPTER II. 

 BLOOD 25 



CHAPTER III. 



MOLLUSCA : THEIR SHELLS, TONGUES, EYES, AND EARS . . 39 



CHAPTER IV. 

 SEA-MATS AND SHELLY CORALLINES 59 



CHAPTER V. 

 INSECTS : WINGS AND THEIR APPENDAGES 70 



CHAPTER VI. 

 INSECTS : THEIR BREATHING ORGANS ...... 93 



CHAPTER VII. 

 INSECTS : THEIR FEET "... 109 



CHAPTER VIII. 



INSECTS : STINGS AND OVIPOSITORS . . . . .125 



CHAPTER IX. 

 INSECTS: THEIR MOUTHS . . 138 



