New YorK AGRICULTURAL EXPERIMENT STATION. 93 
of the phosphorus supply. The withdrawal of the phytin from 
the ration again had the effect of causing marked constipation, 
although in this experiment, because of the precautions that were 
taken in arranging the transition periods, it was not found neces- 
sary to administer a purgative at any time. The laxative influence 
of the phytin seems to be well established, for it does not appear 
probable that in washing the bran other compounds of a laxative 
character were taken out. 
The volume of urine was greatly decreased when the washed 
bran was substituted for the unwashed, the quantity with the high 
phytin ration being 72 per cent. larger than when the phytin was 
withdrawn. ‘This result is fully as marked in this experiment as 
it was in the former one. ; 
It is very clear that in this experiment, as in the first one, the 
excretion of nitrogen bears no relation to the phosphorus outgo, 
a fact to which reference will be made later in our discussion. 
The average weights of milk produced as given for the several 
periods do not show any influence arising from changes in the 
amounts of phosphorus compounds fed. When, however, we come 
to consider the records of milk. flow immediately succeeding the 
change to the washed bran ration, the effect of the change is made 
very evident. The following table shows the milk yield through a 
transition period beginning March 16th and ending March 24th. 
TABLE XXX VIJ.—YIELDS OF MILK DuRING A TRANSITION PERIOD FROM 
HicH To Low PuospHorus RATION. 





Total : Total . 
Daily Daily 
DaTE, E atop yield DaTE. ie yield 
fed. milk, | \ fed, milk, 
Grms. Grms. | Grm. Grms. 
Marcie Sie ctsncisssi¢ 00e,e 77 14429 March ¥20 sass chan et 43 16202 
TESS rere iainits cs a 14088 pp Lp kre 31 15167 
Pst che ee ccs Wd. 14500 PAGEL er eae res 19.8 15181 
LS ewe ee ce eh, 65 15252 23 rohit ane 19.8 15365 
LOR he tect ee 54 15521 DA eg eh oe ae 19 15408 


The above figures show an unmistakable influence of the change 
in the phytin supply. 
The influence of a change in the rations upon the composition 
of the milk, that is, upon the percentage of fat, is not as marked 
as in the first experiment. In Table 28, where the daily com- 
position of the milk is detailed, covering a period from March 
16th to March 30th, during which time the ingested phosphorus 
