TABLE OF CONTENTS. 



CHAPTER SEVENTH. 

 OP THE BLOOD AND CIRCULATION .... .111 



CHAPTER EIGHTH. 

 OF RESPIRATION 118 



CHAPTER NINTH. 

 OF THE SECRETIONS 126 



CHAPTER TENTH. 

 EMBRYOLOGY 1^ J 



SECTION I. 



Of the Egg 131 



Form of the Egg 



Formation of the Egg 1^ 



Ovulation 



Laying 



Composition of the Egg . ... 137 



SECTION II. 

 Development of the Young within the Egg 138 



SECTION III. 

 Zoological Importance of Embryology ....... V>3 



CHAPTER ELEVENTH. 

 PECULIAR MODES OF REPRODUCTION . 156 



SECTION I. 

 Qemmiparous and Fissiparous Reproduction ... 156 



SECTION II. 

 Alternate and Eqidvocal Reproduction 158 



