No. 577] SHORTER ARTICLES AND DISCUSSION 



51 



oviduct rather than from the fusion of two eggs during ap- 

 position, induced by anti-peristalsis. 1 



F. E. Chidester 



Rutgers College. 



LITERATURE CITED 



Fer<§, C. 



de poulet dans les oeufs a deux jaunes. B. de Soc. tie Biol., 

 1898, p. 922. 

 Glaser, O. 



'33. On the Origin of Double Yolked Eggs. Biol. Bull., VoL 24, pp. 175- 

 186. 

 Hargitt, C. W. 



'99. Some Interesting Egg Monstrosities. Zool. Bull., Vol. 2, pp. 

 225-229. 



'12. Double Eggs. Am. Nat., Vol. 46, pp. 556-560. 

 Parker, G. H. 



'06. Double Hen 's Eggs. Am. Nat., Vol. 40, pp. 13-25. 

 Patterson, J. T. 



'11. A Double Hen 's Egg. Am. Nat., Vol. 45, pp. 54-59. 



authoritative paper has been published (Maynie R. Curtis, Studies on the 

 Physiology of Reproduction in the Domestic Fowl, Vi. Double- and Triple- 

 made of the possibility of incomplete separation of both yolk and albumen 

 of a single egg. Evidence of such separation is not wanting in other verte- 

 brates, however scant it may be in the fowl. 



