TABLE OF CONTENTS. 



CHAPTER SEVENTH. 



Page 



OF THE BLOOD AND CIRCULATION Ill 



CHAPTER EIGHTH. 



I 



Or RESPIRATION . . . 118 



CHAPTER NINTH. 



OF THE SECRETIONS . . 126 



CHAPTER TENTH. 

 EMBRYOLOGY 131 



SECTION I. 



Of the Egg . 131 



Form of the Egg .... 



Formation of the Egg ... . . 133 



Ovulation ... . . 134 



Laying ........... 135 



Composition of the Egg 137 



SECTION II. 



Development of the Young icithin the Egg . . 139 



SECTION III. 

 Zoological Importance of Embryology . 153 



CHAPTER ELEVENTH. 



PECULIAR MODES OF REPRODUCTION 156 







SECTION I. 



Gemmiparous and Fissiparous Reproduction .... 156 



SECTION II. 

 Alternate and Equivocal Reproduction ... . 158 



i 



