82 STORRS AGRICULTURAL EXPERIMENT STATION. 
ANALYSES OF FODDERS AND FEEDING STUFES. 
BY OA. or Rey IN LS 

In connection with the investigations reported in this publi- 
cation, there have been made analyses of about 60 samples of 
crops from the field experiments with fertilizers, and 50 samples 
of various fodders and feeding stuffs used in the dairy herd tests. 
In addition to these, analyses were made of not far from 300 
samples of food materials, feces, and urine in connection with 
the metabolism and digestion experiments with men, and 25 
determinations of nitrogen in crops grown in the pot experti- 
ments. ‘The methods of analysis were those recommended by 
the Association of Official Agricultural Chemists* with such 
minor modifications as have been found of advantage in this 
laboratory. | 
The analyses made in connection with the experiments with 
men will be published with the other details of the investiga-~ 
tions.+ ‘The proportions of nitrogen in the crops from the pot 
experiments will be given in the discussion of those expert- 
ments. ‘The descriptions and analyses of the materials from — 
the field experiments and dairy herd tests are given on the 
following pages of this Report. The analyses of the crops from 
the field experiments, given in Table 20, show only the per- 
centages of water, dry matter, nitrogen, and protein in the 
fresh substance, and of nitrogen and protein in the water-free 
material, as these were the only determinations necessary for 
the purpose of the experiments. In the feeding tests with 
dairy herds, more complete analyses of the fodders and feeding 
stuffs were required. These are given for the water-free mate- 
rial in Table 22, and for the fresh substance in Table 21. In 
all these tables two sets of averages are given, the first being 
the averages of analyses here published for the first time, while 
the second are the averages of all analyses of similar materials 
thus far made in this laboratory, including those here reported. 

* U.S. Dept. Agr., Division of Chemistry, Bul. 46, revised. 
+ See article on Results of Metabolism Experiments beyond. 

