NEw YorK AGRICULTURAL EXPERIMENT STATION. 75 
this material to be rich in nucleins, assuming, of course, that these 
bases can only originate from nucleo structures. The ration poor in 
nucleo-phosphorus was compounded by withdrawing the germ oil 
meal and substituting for it wheat gluten and rice meal. It was ex- 
pected that the amounts of digestible dry matter and protein would 
be quite similar in the two rations. 
CHARACTER AND SEQUENCE OF THE RATIONS. 
During a preliminary period ration 1 was fed for several days in 
order to adjust the animal to its influences before observations 
were taken. 
Ration 1—Maximum amount of nucleo-phosphorus. Observa- 
tions with this ration were begun at noon December 20, this period 
continuing to the morning of January 3. 
Transition period—From noon January 3 to the morning of 
January 6. During this period the germ oil meal was reduced 1%4 
pounds daily and the rice was increased 1 pound daily. One-half 
pound of wheat gluten was added each day. 
Ration 2—Minimum amount of nucleo-phosphorus. This ration 
was fed from noon January 6 to the morning of January 109. 
Ration 1—A sudden change was made from ration 2 to ration I 
and the latter was fed from noon January 19 to the morning of 
February 2. 
Ration 2.—A sudden change was made from ration 1 to ration 2 
and the latter was fed from noon February 2 to the morning of 
February 16. 
The period of observation in this experiment covered 58 days, 
during which time there was a continuous collection and analysis of 
the milk and excreta. | 
THE NUMERICAL RESULTS OF THE EXPERIMENT. 
As in the discussion of the first experiment the tables are made 
up either of daily records or of averages for periods in which it 
was believed the animal had become adjusted to the ration that was 
being fed. A great mass of data was accumulated which is pre- 
sented in a summarized form. The tables that follow are displayed 
under several heads. 
Table 13.—The rations fed. 
Table 14.—The composition of the feeding stuffs used. 
Table 15.—Quantities and percentages of digestible nitrogen and 
dry matter fed. 
