28 
Colorado Experiment Station. 
made on air-drying. The cow manures were much harder to sample 
than the sheep manures, and this probably accounts for some dis¬ 
crepancies in the results. 
TABLE V. 
Carbon and Hydrogen in Cow Manures. 
The results are in percent of air-dried manure. 
Sand and Silicic Acid Included 
l Sand and Silicic 
Acid Excluded 
No. 
Age 
Carbon 
Hydrogen 
in years 
Carbon 
Hydrogen 
1 
1 
20.450 
2.690 
35-188 
4.630 
2 
2 
23.920 
3-193 
37.961 
5.067 
3 
3 
18.480 
2.418 
35-735 
4.676 
4 
10 
23•564 
3 • 388 
3 1 -833 
4-577 
5 
10-12 
6.884? 
2.698 
12.263 ? 
4.806 
6 
3 
25 - 4 I 4 
3-256 
32•982 
4.226 
7 
/> 
24.871 
4.029 
36.876 
5 • 974 
8 
y 2 
27.092 
4 - 3 I 3 
37-887 
6.032 
9 
1 
28.412 
4.001 
39-321 
5-537 
10 
2 
20.784 
3.208 
34-354 
5-302 
11 
2 -5 
19-983 
2.859 
36.071 
5- 161 
T 2 
10 
I8.946 
2-739 
34■546 
4-995 
T 3 
18 
12.266 
1.366 
34-771 
3-863 
Table V, like Table III, gives a series of carbon and hydrogen de¬ 
terminations which are remarkably close together. The average of the 
carbon determinations with sand and silicic acid calculated out is 33.8 
percent and the hydrogen is almost an even 5 percent. Now the ra¬ 
tio of the carbon to the hydrogen in the sheep manures was 33.6 to 
4.9 which are about the identical figures for the cow manures. There 
is then practically a constant amount of carbon and hydrogen in both 
sheep and cattle manures. 
Some Miscellaneous Manures. 
Table VI contains those manures which were not all of one 
kind, but are rather to be classed as mixed stable manures. Two of 
the manures, Nos. 44 and 45, are horse manure alone. 
