No. 645] FECUNDITY IN THE GUINEA PIG 



359 



Pig. U. S. Dept. of Agri 



rine AJbsorption of Ova, Anat. Rec, Vol. 12, 1917. 



Tiihal and Ovarian Lysis and Resorption of Cc 

 s. Biol Bull., Vol. 36, April, 1919. 



Ober die 



ngs-und Befruchtungs-processe des Meersch- 

 weinchcneies. Ariat. Hfte., Abt. 1, Vol. 29, 1905. 

 K!kard, C. R. and Papanicolaou, G. N. 

 1917a. The Existence of a Typical CEstrus Cjcle in the Guinea Pig, 

 —with a Study of Its Histological and Physiological Changes. 

 Am. Jour. Anat., Vol. 22, No. 2, Sept., 1917(a). 

 1917fc. A Ehythmical "Heat Period" in the Guinea Pig. Science, 

 X. S., Vol. 46, pp. 42, 44, 1917(b). 

 ckard, C. R. and Papanicolaou, G. N. 



1918. Further Studies on the Modification of the Germ-cells in 



Mammals: the Effect of Alcohol on Treated Guinea Pigs and 

 their Descendants. Jour. Exp. Zool., Vol. XXVI, p. 119, 



1919. The Vaginal Closure Membrane, Copulation and the Vaginal 



Plug in the Guinea Pig, with Further Considerations of the 

 GEstrus Rhythm, Biol. Bull., Vol. XXXVII, Oct., 1919. 

 .ckard,. C. R. and Papanicolaou, G. N. 



1920. Effect of Underfeeding on Ovulation and the CEstrous Rhythm 



in Guinea Pigs. Proc. Soc. Exper. Biology and Medicine, 

 XVII, 1920. 



