88 
Th^ C01.0RAD0 Experime:nt Station. 
with the saltbush 1,646 grains were consumed and 1,090 grams di¬ 
gested ; but with the corn fodder there was only 473 grams of pro- 
teids consumed and 179 grams digested. This fodder seems to give 
favorable results, though the composition of the fodder is very dif¬ 
ferent from the others in respect to the amount and character of 
the carbohydrates and also in regard to the proteids, the latter, in 
particular, being largely soluble in the 80 per cent, alcohol. This 
is especially noticeable with the portion digested, as 141 grams out 
of the 178 digested were soluble in the alcohol. Another point of 
difference between the proteids of these three fodders is the low de¬ 
gree of digestibility of the proteids contained in the corn fodder. 
This is true with both the general coefficient and the coefficients ob¬ 
tained for the proteids in the extracts. The general coefficients of 
digestibility for the proteids are 73 for those of the alfalfa, 66.4 for 
those of the saltbush, and 36 for those in the corn fodder. Alcohol 
dissolves approximately one-third of the total proteids out of alfalfa, 
and these have a coefficient of digestion of 81.7; from the saltbush* 
a trifle more than one-third, and the coefficient of digestion was 
found to be 88; from the corn fodder, it dissolves a little less than 
one-half of the nitrogen, qalculated as proteids, of which 65.5 per 
cent, was found to be digestible. 
§210. The other solvents removed quite small amounts of 
proteids from the corn fodder and these have quite low coefficients 
of digestion. The sodic hydrate dissolves the second largest portion 
of the proteids out of the fodder, but it is so good as indigestible. 
This is in marked contrast with the other fodders, in which cases 
the amounts of proteids dissolved out by the sodic hydrate are both 
absolutely and relatively much greater, and the coefficient of diges¬ 
tion is high in each case, 82 for that of alfalfa and 70 for that of 
the saltbush, against zero for that of the corn fodder. It is possible 
that the coefficient obtained for this portion of the proteids is er¬ 
roneous, but it is not probable, and it is safe to assume that the co¬ 
efficient of digestion of this portion of the proteids in corn fodder is 
very low, indeed, probably zero, as above stated. 
§211. The most notable features so far developed are that the 
soluble carbohydrates, i. e., all that portion of the fodders not in¬ 
cluded under the proteids, and the residue or cellulose vary within 
narrow limits, except for those soluble in hydric chlorid. The most 
important extract is that obtained by alcohol, in which, it is true, that 
large quantities of proteids occur, but their coefficient of digestion 
is, in the cases of tlie saltbush and corn fodder, less than the gen¬ 
eral coefficient for the extract, so that the coefficient for the carbo¬ 
hydrates rni^st be higher than that found for the extract. This does 
not hold fo^ the alfalfa. The coefficients of digestion found for the 
alsol'iolic extracts of these three fodders are as follows—alfalfa, 
