xiv CONTENTS. 



CHAPTER XVI. 

 Dissection of the Pigeon. Columba livia. 



PAGE 



External characters Dissection of the pectoral muscles Dissec- 

 tion of the air-sacs Dissection of the digestive system Dis- 

 section of the circulatory system Dissection of the respiratory 

 system Dissection of the renal and reproductive systems 

 Examination of the brain The sense organs . . .429 



CHAPTER XVII. 

 The Development of the Chick 



Practical instructions General description Segmentation of the 

 egg Formation of the germinal layers The primitive streak 

 The embryo from the first day to the time of hatching 

 Observations on the living egg 464 



APPENDIX. 



Reagents for killing, hardening, and preserving Reagents used in 

 staining Clearing reagents Mounting media Microtomist's 

 media Cement for fixing down sections cut in paraffin 

 Injection fluids 489 



INDEX . 499 



