30 
The Colorado Experiment Station. 
feces of sheep fed on timothy hay, native hay, corn fodder or salt¬ 
bush, that is to say, we found no nitrogen in these samples which 
was not precipitated by cupric hydrate. 
TABLE XXX. 
COEEEICIENTS OE DIGESTION OE THE PROTEIDS IN THE VARIOUS EX¬ 
TRACTS OE TIMOTHY HAY. 
Con- Di- 
Proteids soluble 
cohol. 
in 
80% al- 
Fed. 
187.81 
Orts. 
35.04 
sumed. 
152.77 
Voided, gested. 
24.12 128.65 
Coef. 
82.30 
P rote id's soluble 
hot water . . . 
in 
cold and 
. 82.58 
41.78 
40.80 
53.41(—12.61) 
Proteids soluble 
dric chlorid . . . 
in 
1% hy- 
. 98.57 
33.25 
65.32 
42.65 22.67 
34.71 
Proteids soluble 
hydrate 
in 
1% sodic 
. 350.31 
126.69 
223.62 
92.61 136.01 
58.59 
Proteids soluble 
in 
chlorin, . 
. 13.23 
10.78 
2.45 
37.48(—35.03) 
• • • • 
Proteids in residue, 
cellulose. 
. 9.32 
2.70 
6.62 
6.89 (—0.27) 
• • • • 
Total . . . . 
.741.82 
250.24 
491.58 
257.16 234.42 
47.69 
The general coefficients of digestibility found for the three in¬ 
dividual sheep were 47.73, 41.06 and 41.27. Average 43.35. 
CALORIES CONSUMED AND VOIDED. 
§77. We find the calorific value of dry timothy hay to be 
4,414 and 4,417, an average of 4,415 plus; the orts gave 4,392 and 
the feces 4,709 calories. 
§78. The dry matter fed contained 54,979,995 calories; the 
orts contained 18,586,944 calories and the feces 18,986,688 calories, 
which indicates the use of 47.83 per cent, of the heat energy of the 
fodder, or 17,406,363 calories. 
§79. This timothy hay proved to be a poor fodder for sheep 
when fed alone. Two of the sheep lost weight and the third one 
gained one-half pound between the two weighings. 
§80. We did not carry our calorimetric work further with 
timothy hay for the reason that this hay has been made the subject 
of study by others. Quite an exhaustive study of it is to be found 
in the Report of the Pennsylvania State College for the year 1903 
and 1904. 
NATIVE HAY. 
§81. This hay is made up of a mixture of grasses and rep¬ 
resents a fodder which is prized by many as an excellent one. The 
mixture of grasses varies greatly even in hay from the same farm. 
The results obtained in experiments with this hay are therefore ap¬ 
plicable to other samples of it in a general way only, and it is for 
