38o 



Scientific Proceedings (124). 



the data obtained from the five Ascaridia-free ring doves it is 

 found to be the smoothest of the series and quite similar in its 

 several parts to the curves for suprarenal hypertrophy and ovi- 

 ducal growth found in that earlier work. These several series of 

 measurements therefore seem definitely to show that coincident 

 with ovulation in the pigeon there occurs an increase of the blood 

 sugar to 25 per cent, or more above the pre-ovulation value. 



The results indicate: (1) That the stage with reference to 

 ovulation is probably a factor influencing the values obtained 

 for blood sugar in other animals and is probably too large a factor 

 to be left out of consideration in dealing with samples taken from 

 reproducing females. (2) That, the essential similarity of the 

 curve expressing the rise of the blood sugar with the curve expres- 

 sing the coincident hypertrophy of the suprarenals, as earlier 

 reported by one of us, is a further evidence for the relationship of 

 the suprarenals to carbohydrate metabolism on the one hand and 

 to sexual functions on the other. (3) That the enforcement in 

 pigeons of frequent and continuous ovulations throughout the 

 year, as this has been practised and reported by Whitman and by 

 Riddle — with important results on sex, viability, and longevity of 

 offspring — is doubtless accompanied by an increased and nearly 

 continuous mobilization of carbohydrate in the female parents. 



185 (1932) 



Seasonal tide of blood phosphate in infants. 



By ALFRED F. HESS and MARION A. LUNDAGEN. 



[From the Home j or Hebrew Infants, New York City.] 



In a previous communication it was shown that in infants the 

 inorganic phosphate of the blood could be raised to the normal 

 level by frequent exposures to the sun's rays. 1 The same result 

 can be brought about by means of the carbon arc-lamp. The most 

 effective radiation in bringing about this alteration are the ultra- 

 violet rays. As has been shown by Dorno, the rays of the sun 



1 Hese, A. F., and Gutman, P., Proc. Soc. Exper. Biol, and Med., 1921, xix, 



3i. 



