xii EMBEYOLOGY OF THE LOWER VERTEBRATES 



CHAPTER IX 



PAGE 



Some of the General Considerations relating to the Embry- 

 ology, of the Vertebeata . .484 



CHAPTER X 



The Practical Study op the Embryology op the Common Fowl 508 



CHAPTER XI 



Hints regarding the Practical Study op the Embryology of 



the Various Types of Lower Vertebrates . 558 



APPENDIX 



The General Methods of Embryological Research 573 



INDEX . 583 



