New YorK AGRICULTURAL EXPERIMENT STATION. 65 
and the washed bran substituted by the same amount. The hominy 
feed was decreased 1 pound daily and the rice increased 134 pounds 
daily. The wheat gluten was increased about 1-5 pound daily. 
Marked dryness of the feces accompanied this transition but the 
animal continued to consume all the ration. 
Ration 1.—The low phosphorus ration was fed from noon May 
20 to the morning of June 17. 
Ration 2——Sudden change from a low phosphorus, to a high 
phosphorus, ration, the latter being fed from noon June 17 to the 
morning of June 24. 
This experiment covered 108 days. The collection and analysis 
of the urine and feces covered 71 days, this being done continu- 
ously during 54 days. A complete analysis of the milk was made 
daily. 
NUMERICAL RESULTS OF THE EXPERIMENT. 
Extensive data were necessarily recorded in an experiment in- 
volving such numerous weighings and analyses during a period of 
over three months. The figures herewith presented are confined to 
those which are essential to a critical analysis of our conclusions. 
The tables are made up either of daily records or of averages 
for certain periods and cover those times when it was believed 
that the animal had adjusted herself to the ration being fed. In 
some cases the effects of the transition periods are shown. The 
tables that follow are arranged under the following heads: 
Table 1.—The rations fed. 
Table 2.—The composition of the feeding stuffs used. 
Table 3.—Quantities and percentages of digestible nitrogen and 
dry matter fed. 
Table 4.—Percentage composition of the milk with both high 
and low phosphorus ingestion, including a transi- 
tion period. 
Table 5.—Percentages of various forms of phosphorus in milk. 
Table 6.—Total phosphorus balances. 
Table 7.—Distribution and balances of nucleo-proteid phos- 
phorus. 
Table 8 —Distribution and balances of soluble organic phos- 
phorus compounds. 
