r 
COLORADO FODDERS. ii 
§ 23. The amount of proteids in the corn fodder is compara¬ 
tively small and their coefficient of digestion low, so that, whatever 
their distribution and importance, their influence cannot materially alter 
the general results obtained. The corn fodder cellulose is instructive 
because it has a rather lower fuel value than the other celluloses, but 
it has the highest coefficient of digestion of any of them. 
§ 24. We have now presented a hay made from a member of 
the pea family, one of the goosefoot family and one from a very coarse 
grass, corn. We will next consider a mixture of small grasses, our 
native hay, and pure timothy. 
§ 25. The native hay is a mixture of grasses and sedges with 
some rushes. We find this hay quite similar in composition to the corn 
fodder but a smaller proportion of the digestible proteids is taken into 
solution by alcohol than in the corn fodder. The combined amount of 
glucose and cane sugar is less, the wood is greater and the amount 
of still another sugar to which I have not specifically referred, but 
which is found in the caustic soda solution, is large enough to be con¬ 
sidered separately. Such are the striking features of similarity in 
the composition of the two. The fuel values of the native hay were 
not studied in detail but the general results were that twentv-two and 
a quarter million units of energy appropriated as native hay proved 
to be exactly equivalent to nineteen and a half million units appro¬ 
priated as corn fodder, if the gain in live weight is a correct standard 
by which to measure their effects. 
§ 26. The native hay contains more proteids than the corn 
fodder but not as large a quantity as alfalfa hay, and they have a high 
coefficient of digestion. The carbohydrates are easily digestible but 
less so than those of either the alfalfa or corn fodder, and we find that 
it takes some three million units more of energy in the form of native 
hay than in the form of corn fodder to produce the same result, which 
is in perfect keeping with the lower coefficient of digestibility of the 
carbohydrates of the native hay. 
§ 27. The timothy hay was studied to the same extent and 
in the same manner as the native hay. We find in it the same char¬ 
acteristics that we found in the native hay; a moderate amount of 
proteids, but their coefficient of digestion is somewhat lower. The 
nitrogenous constituents are soluble in eighty per cent alcohol to the ex¬ 
tent of about one-third of the total amount present and this portion has 
a high coefficient of digestion. 
§ 28. It seems to be generally true that the nitrogenous 
matters soluble in alcohol are readily digestible, for instance, we find 
that of this portion of alfalfa, eight-tenths is digestible; of the timothy 
hay, eight-tenths; of the saltbush, nearly nine-tenths; of the native 
hay, six-tenths, and of the corn fodder, six-tenths. I have stated that 
the alcoholic extract of a hay stands before any other portion in feeding 
value, as indicated by its amount, general coefficient of digestion and 
fuel value. The statement seems to hold to a large extent in regard 
to the proteids. No distinction being made between the amids and the 
proteids. 
