40 



Mary Bloniit. 



Fig 23. 



Fig. 24. 



Fig. 23. — Pigeon egg obtained at tliree o'clock a. m., about seven liours after 

 fertilization. 



Fig. 24. — Pigeon egg obtained at 4.00 a. m., eiglit liours after the estimated 

 time of fertilization. 



Fig. 25.— Pigeon egg taken from oviduct at 3.15 a. m., about seven and one- 

 fourth hours after fertilization. 



