NEw York AGRICULTURAL EXPERIMENT STATION. IOI 
the larger urine excretion was not correlated with an increased 
nitrogen outgo. 
The amount of water drank would certainly exert some influ- 
ence. In order to determine whether any relation existed between 
the water taken and urine excretion, the following table has been 
prepared showing the average daily quantities of water consumed 
during the periods for which other averages have been given. 
TaBLE XLIII.—REvATION oF- FLow oF URINE TO AMOUNT OF WATER 









DRANK. 
Cow 1. , Cow 2. 
Phos- Water | Weight ee Water | Weight 
PERIOD. phorus drank | of urine PERIOD. Pp tea drank | of urine 
fed. daily. | daily. dail daily. | daily. 
any. 
; Grms. Lbs. oz.| Grms. Grms. Lbs. 0z.| Grms. 
March 11-16... 12.8 75-9 4974 || Dec. 27-Jan. 2. 37.93 77-15 3600 
April 12-18... 78.7 69-10 10555) 1" Jans 13-19)... 18.2 88- 5752 
Apr. 28-May 1. 16 55- 6 9560 || Jan. 27-Feb. 3 3in3 78- 5 4528 
May 9-15..... 83.3 |, 97-12 12723 Feb. 10-16.... 20.2 85-12 5468 
Mays22-26% :.: 21.4 72-10 10147 March 12-18.. 77 85- 8 9433 
Mar. 30-Apr. 5 16 79- 9 5482 



It would not be logical to conclude from the figures of the above 
table that the variations in the volume of urine are caused by 
variations in the water supply. If the whole case rested on a 
comparison between the period May 9 to 15 and the periods pre- 
ceding and following, a consistent relation would be established, 
but on the other hand a comparison of the period, March 11 to 
16, with April 12 to 18, and of February 10 to 16 with March 
12 to 18, gives us opposing evidence. 
The effects produced upon the volume and composition of the 
milk.—A definite explanation of the unlike influences exerted by 
the different rations upon the volume and composition of milk is 
not now possible. It may be that the volume relations of both 
urine and milk are affected by the osmotic tensions induced by the 
presence .of certain salts. 
The work of Herter (See page 59) showing that an insufficient 
fat supply in the food of young animals depresses the assimila- 
tion of phosphoric acid, is suggestive in this connection. These 
experiments show a reverse relation in that the elaboration of butter- . 
fat is apparently lessened by an insufficient phosphorus supply. 
The question naturally presents itself as to whether the low 
