FERTILITY AND HATCHING OF EGGS. l6l 



Graham. W. R. 1908. 



Hatching and Rearing Chickens. 



Ont. Dept. Agr. Bulletin 163, pp. 1-28. 



Contains mass of detailed statistics regarding fertility 



and hatching. 

 Harper, E. H. 1904. 



The Fertilization and Early Development of the Pigeon's 



Egg. 



Amer. Jour. Anat. Vol. III. 



Detailed description of the actual process of fertilization 



(union of sperm with ovum) in the pigeon. 

 ;Harvey, \\'. 1737. 



Exercitationes de generatione animalium. 



Lugduni Batavorum. 



Duration of fertility after mating. States that 20th egg 



after a copulation developed. (Cited after Barfurth.) 

 Holmgren, F. 1872. 



Om Kottatande dufvor. 



Aftryck ur Upsala Lakare-forenings Forhandlingar. 



Upsala. 



In experiments with pigeons a bad effect of meat feed- 

 ing on the hatching quality of eggs is noted. (Cited from 



Houssay.) 

 Houssay, F. 1907. 



Variations experimentales. Etudes sur six generations de 



poules carnivores. 



Arch zool. exper. et gen. IV e Ser., T. VI, pp. 137-332. 

 This important study contains a chapter regarding the 



eft'ect of a purely carnivorous diet on the fertilitv and 



hatching quality of hens' eggs. 

 Jarvis. L. G. 1898. 



Report of Manager of Poultry Department. 



Ont. Agr. Col. & Expt. Farm Rept. 1898, pp. 193-196. 

 Influence of duration of mating on fertilitv of eggs. 

 Kionka, li. 1894. 



Die Furchung des Hiihnereies. 



Anat. Hefte. Vol. X. p. 393 ff. 



Data on persistence of fertility after removal of male. 



