468 
Journal of Agricultural Research 
Vol. XI, No. io 
slight uncertainty as to the results in period 2, owing to the fact that 
some of the spilled urine soaked into the mat, and this amount had to 
be estimated. 
Table 3. —Results on urine 
Period. 
Weight. 
Aver¬ 
age 
specific 
grav¬ 
ity. 
Total solids. 
Total nitrogen. 
Total carbon. 
Energy. 
Per 
gram. 
Total. 
Period 1: 
Collected..;. 
Gm. 
59> 594-0 
810.0 
I- 0332 
Per 
cent. 
$• 399 
Gm. 
3> 21J. 5 
45-0 
Per 
cent. 
1-315 
1-354 
Gm. 
783.70 
11.0 
Per 
cent. 
1.779 
Gm. 
i, 066.2 
14.8 
Small 
calories. 
168.11 
Large 
calories. 
10,018.3 
140.2 
Spilled... 
Total, todays.. 
Average. 
> 
60,404.0 
6,040.4 
3,262.5 
326.3 
794-7 
79-5 
1,075.0 
107*5 
10,158.5 
1,015.9 
Period 2: 
Collected. 
96,277.0 
2,268.0 
i- 0364 
S’ 597 
5,388.6 
54-7 
1-434 
*>380.3 
14.0 
1.970 
1,896.7 
19.2 
176.04 
16,948.6 
171.9 
Spilled. 
Total, 10 days.. 
Average. 
98,545* 0 
9 , 854.5 
5,443-3 
544-3 
*>394-3 
139-4 
*>9i5*9 
191.6 
17,120.5 
1,712.1 
- 
_ 1 
*_ 
_ 
__ 
Period 3: 
Collected. 
75,120.0 
5?506.0 
1.034 
6.560 
5,379-5 
375-8 
1-549 
l>163.8 
81.3 
1.996 
1,636.8 
*14-3 
186. 55 
15,298.0 
1,068.7 
Spilled. 
Total, 8 days... 
Average. 
80,626.0 
10,078.3 
5?755-3 
719-4 
1,245.1 
155-6 
*> 75*- * 
218.9 
16,366.7 
2,045-8 
Period 4: 
Collected, iodays 
Average. 
82,960.0 
8,296.0 
1-031 
4 - 9 SO 
4,106.5 
410.7 
1.289 
1,069.6 
107.0 
1.641 
1,361.4 
136.1 
158.97 
13,188.2 
1,318.8 
EPIDERMAL TISSUE 
The steer was thoroughly brushed before entering the calorimeter 
and again after leaving it. The hair and dandruff obtained in the second 
brushing and the small amounts swept up in the calorimeter were weighed 
and their content of nitrogen, carbon, and energy determined. The 
steer was clipped at the beginning of the experiment and at its close, 
185 days later, and the same determinations made upon the hair obtained 
in the second clipping. The total of hair and brushings is regarded as 
representing the production of epidermal tissue (Table 4). 
Table 4. —Average daily production of epidermal tissue 
Factor. 
In growth 
of hair. 
In brush¬ 
ings. 
Total. 
Dry matter.gm.. 
Nitrogen.gm.. 
Carbon.gm.. 
Energy.cal.. 
2.6 
•4 
i *3 
14. 2 
23-7 
r. 8 
9.6 
104. 5 
26.3 
2. 2 
IO. 9 
118. 7 
