CONTENTS, 



PAGE 



CHAPTER I. 

 Hairs, Feathers, and Scales . 1 



CHAPTER II. 

 Blood 25 



CHAPTER III. 



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



CHAPTER TV. 

 Sea-mats and Shelly Corallines 59 



CHAPTER Y. 

 Insects : Wings and their Appendages . . .70 



CHAPTER VI. > 

 Insects : their Breathing Organs 93 



CHAPTER VH. 

 Insects: their Feet 109 



CHAPTER Vm. 

 Insects: Stings and Ovipositors . . . . 125 



CHAPTER IX. 

 Insects: their Mouths 138 



