100 Report of Department of Animal Industry of the 



added on the days Nos. 34 to 50, 50 grams on the 34th, 125 grams 

 on the 35th, and 175 grams on each succeeding day until the 50th 

 day, after which the amounts were gradually decreased. Four days 

 were chosen in the middle and four days at the end of this period. 

 Inasmuch as this period (IV) is the main feature of the experiment, 

 an average is also taken of the entire time when the full amount of 

 calcium phytate was added (days 36 to 45). The second low- 

 phosphorus period was prolonged to show the effects of an exagger- 

 ated case of phosphorus starvation, and lasted from the 51st day to 

 the 77th day. The average of days 51 to 56 is given to show the 

 first changes induced by the withholding of the phosphorus from 

 the ration, the other groups of days selected were three of six days 

 each at the end of the period. These averages of the days of the 

 several periods are presented in the main tables. 



Table IV. — Intake and Outgo of Nitrogen and Phosphorus. 



A. — NITROGEN. 



I. 

 II. 



+14.2 



—0.8 

 +0.7 

 +0.2 



