10 
The: Colorado Expe:rime:nt Station. 
pounds in which the nitrogen is contained, i. c., whether it is con¬ 
tained in undigested portions of fodder or in fecal matter. The re¬ 
sults obtained in this work in regard to the nitrogen, are open to 
the same questions that those of our ordinary analysis and possibly 
to even more serious ones, for we divide it up into six or seven por¬ 
tions instead of presenting it as the common constituent of a single 
class without raising any further questions. 
§24. The samples of hays fed were of course the same through¬ 
out the experiments, so that one analysis represents the whole of any 
fodder fed and no questions can arise relative to this; concerning the 
orts and dungs, however, there might be a question. In Bulletin 93, 
we calculated the coefficient of digestion for each individual animal 
and took the average of the coefficients so found as the coefficients 
of digestion of the several hays and fodders. Owing to the tedi¬ 
ousness of the work, we followed a different procedure in this case, 
i. e., we made composite samples of the dungs, by taking the same 
aliquot part of the dung voided by the different sheep in each 24 
hours during the time of the experiment and combining them into 
a composite sample. The sample of orts was prepared in a similar 
manner. 
ANALYTICAL DATA—ALTALLA HAY. 
§25. The following analyses have been brought together in 
order to present, succinctly as possible, all that our analyses tell us 
about the fodders and their digestibility. 
The average coefficients of digestibility found for this partic¬ 
ular alfalfa hay were for the dry matter 62.08, ash Sy. 6 y, fat 29.86, 
protein 72.54, fibre 49.93, and for the nitrogen-free extract 72.89. 
The general facts presented by the data concerning alfalfa pertain 
to all of the other fodders. 
table: I. 
allalta hay. 
FODDER ANALYSIS. 
ALFALFA HAY 
Moisture . 7.75 
Ash . 11,77 
Ether Extract . 1.62 
Proteids . 15.03 
Crude Fibre . 30,28 
Nitrogen-free extract . 33.55 
100.00 
FECES OF SHEEP NO. 6 
Moisture . 6.82 
Ash . 12.15 
Ether extract . 3.12 
Proteids . 10.86 
Crude Fibre . 40.34 
Nitrogen-free extract. 2 6.83 
100.00 
