Colorado Fodders. 
75 
§169. The methoxyl group occurs in all of the fodders, but 
it is not very abundant, and its coefficient of digestion is low. 
§170. The amid nitrogen is not abundant in these hays but 
its coefficient of digestion is high. How much energy it may 
yield in its changes either absolutely or in comparison with the 
albumenoids, I do not know. 
§171. Perhaps the most suggestive results are those obtained 
with the bomb calorimeter. The percentage of heat which dis¬ 
appears from the fodder in its passage through the animal, varies 
with the different fodders; for the saltbush we found that 39.16 
per cent, of the energy had disappeared; for the corn fodder 56.00 
per cent., and for the alfalfa 62.43 per cent. In studying the re¬ 
spective extracts, the results agree in showing that the alcoholic 
extract furnished the largest amount of heat. Next to this in the 
case of the alfalfa and the saltbush comes the sodic hydrate extract, 
but in the corn fodder, the residue or cellulose furnishes the second 
largest quantity. The third largest quantity is furnished in the 
case of the alfalfa and saltbush by the cellulose and in the corn fod¬ 
der by the hydric chlorid extract, as shown by the following state¬ 
ment of the heat units appropriated by the sheep from the respective 
portions: 
table cii. 
Alfalfa Corn Fodder Saltbush 
Alcoholic extract yielded . 10,737,717 7,027,781 5,781,962 
Sodic hydrate extract yielded . 8,218,319 2,146,018 5,502,520 
Hydric chlorid extract yielded. 2,999,157 4,914,158 4,037,125 
Residue or cellulose . 5,952,562 5,435,160 4,372,314 
§172. These results are quite consonant with those obtained 
from the study of the extracts which show that the respective fod¬ 
ders yielded the following quantities of digestible material in grams: 
table cm. 
Alfalfa Corn Fodder Saltbush 
Alcohol extract . 2520 1789 2515 
Hydric chlorid extract . 912 1245 1274 
Sodic hydrate extract . 1359 342 1040 
Residue . 1442 1210 841 
§173. The fuel value of these different portions are not equal 
and the coefficients of digestion are also unequal, so that a close 
agreement could not be expected. The general deportment of the 
timothy and native hay would seem to place them close to corn fod¬ 
der. The sorghum shows a large amount of digestible alcoholic 
extract, hydric chlorid extract and cellulose, but less of the latter 
two than the corn fodder and though they seem to be large enough 
in quantity and fairly proportioned, the sheep lost weight amount- 
