ANALYSES OF FODDERS AND FEEDING STUFFS. 229 
ANALYSES OF FODDERS AND FEEDING STUFFS. 
REPORTED BY W. O; ATWATER AND F., G. BENEDICT. 
In connection with the work of the Station during the past 
year various materials used as food for animals have been 
analyzed. Some of these analyses were made in connection 
with studies of rations fed to milch cows and are included in 
this report, although the details of the investigations are re- 
served for future publication. Others were made in connec- 
tion with the digestion experiments with sheep, and still others 
in connection with the field and plot experiments with differ- 
ent crops and fertilizers, referred to in other parts of this report. 
Many of the analyses of forage plants grown on the experi- 
mental plots and the feeding stuffs used in the digestion experi- 
ments were made during the year 1897-1898, but as the experi- 
ments to which they belonged were not discussed in the Report 
for 1897, they were reserved for publication in the present re- 
port. Besides the analyses of fodders and feeding stuffs many 
analyses of uneaten residue and of feces were made in connec- 
tion with the sheep digestion experiments reported above. 
These analyses have already been given in connection with the 
details of the experiments and are not included in the following 
tables. 
The methods of analyses were, in general, those recom- 
mended by the Association of Official Agricultural Chemists, 
though minor modifications have been found desirable. 
The results of the analyses as calculated to water content 
at the time of sampling are given in Table 46, page 235. In 
this table the materials are grouped somewhat according to 
their water content at the time of taking the sample, as follows: 
Green fodders, silage, cured hay and fodder, grain and 
milling by-products. 
The percentage composition of the water-free substance 
(dry matter) is shown in Table 47, page 239. ‘The fuel values 
per pound are caluculated according to the usage, which 
assumes that one-hundredth of a pound of protein or carbo- 
hydrates has a fuel value of 18.6; a hundredth of a pound of fat, 
42.2 calories. It has been pointed out in previous reports, and 
we reiterate with emphasis, that these factors for fuel values are 
