40 
The Colorado Experiment Station. 
yielded 189 grams fiirfurol, while those soluble in one per cent, 
sodic hydrate yielded 202 grams of furfurol. Those substances 
present in the native hay soluble in one per cent hydric chlorid 
yielded a total of 609 grams of furfurol, of which 44.04 per cent, 
was digestible; those soluble in one per cent, sodic hydrate yielded 
308 grams of furfurol, of which 42.16 per cent, was^ digestible. 
Another very marked difference between these fodders is the solu¬ 
bility of the substances yielding furfurol in the different media, the 
furfurol yielded by the cellulose not being considered in the follow¬ 
ing statements. Hydric chlorid removes from the native hay al¬ 
most exactly one-half of the furfurol—coefficient 44.04—while it 
removes about one-quarterbf it from the alfalfa, coefficient 100. Sodic 
hydrate removes from the native hay one-quarter of the furfurol, 
coefficient 42.16; from the alfalfa one-quarter, with a coefficient of 
digestibility of 27.81. 
§105. The one per cent, sodic hydrate solution seems to re¬ 
move very considerable amounts of material which is capable of 
yielding furfurol from both of these fodders, but we were unable 
to obtain more than minute quantities of reducing sugars in the 
inverted extracts, which is contrary to what we would expect if 
this furfurol is derived from pentosans. 
§106. The heat values of these two hays, alfalfa and native 
hay, show more directly, probably, than any other factors their 
relative values. We find that the animals appropriated 30,519,751 
calories when fed on alfalfa, and 22,255,418 calories when fed on 
the native hay. The same sheep were used in these two experi¬ 
ments, both made under favorable conditions, so that the questions 
of individualty, etc., are removed as far as far as possible. The 
net result was a gain of 9 pounds in the one case, alfalfa, and three 
and one-half pounds in the other, native hay. 
§107. Other sheep were used in the experiment with timothy 
hay, but the conditions w^ere as favorable as we could make them. 
The energy consumed was 17,406,363 calories, and the result w^as 
a net loss of one pound. 
CORN DODDER. 
§108. The fodder used was in good condition. The stalks were 
rather heavy for sheep feeding and the amount refused by them 
w-as, on this account, rather large. The corn was a variety of dent 
and had been grown in drills in which the seed had been thinly 
sown. The fodder was cut in lengths not exceeding one-half inch 
before feeding. The sheep ate it readily, but refused the heavier 
stocks, nor could we induce them to eat this portion by grinding it. 
Each of the three sheep used in this experiment gained weight while 
being fed on it. No other food was fed in connection with it. The 
