THE FOOD OF MAINTENANCE. 91 
a pound more ether extract. Reducing the .18 of a pound of 
ether extract to a carbohydrate equivalent (.18 x 2.25) .405 
of a pound and adding this to 7.386, the carbohydrates for 
convenience in comparing the ration fed with the Wolff 
standard, we have the following: 
TABLE VII.—Giving Nutrients Consumed Daily and the Wolff Standard. 





DIGESTIBLE NUTRIENTS 
FDS au OF 
| ; Carbohy- Ether 
| Protein drates Extract 
| 
Ration fed per 1000 lbs. live weight...| 13 38 704 Wot Sak -10 
i] 
| 
Wolff Standard maintenance ration ... 18.00 .70 8 00 AL@) 



The ration fed provided, practically, the amount of pro- 
tein called for by the Wolffstandard and .209 of a pound 
less of non-nitrogenous matter, and produced adaily average 
gain of .36 of a pound, showing that the ration fed was in 
excess of the amount actually needed for food of mainte- 
nance. 
The second experiment was conducted with two barren 
dry cows during the winter of 1896—97 covering a period of 
100 days. One received 18 pounds and the other 14 pounds 
of fodder corn daily. The following gives their weight at the 
beginning of the trial and at the close, being the average of 
daily weighings which were in all cases made in the morning 
after feeding and before watering, and the average of all 
their weights during the trial: 
Alice. Belle. 
Wietehi at Dect ninig..........c0000es---0- 0 1005 
WISI OMI AL CLOSE: =.-0..<.00c-ccccacecensere-eaes 803 985 
Pameae! Wile Hib. ccr-y a2 <00.2cassccovssea-caee 808 1010 
At no time after the first 11 days did Alice fall below 800 
pounds and Belle maintained a weight above 1000 pounds 
until the month of February when her average weight was 
987. Thedry matterconsumed daily and nutrients digested, 
as determined by a digestion experiment during the trial, is 
given in the following: 
