SUMMARY. 
The average coefficients of digestibility found for corn fodder—a variety 
of dent corn—sown thickly and cut quite immature were: Dry Matter, 58.56; 
Ash, 42.84; Fat, 45.91, Protein, 47.38; Crude Fibre, 67.87; Nitrogen Free Ex¬ 
tract, 57.60. The average coefficients given by Jordan and Hall for the im¬ 
mature fodder are: Dry Matter, 63.9; Ash, 37.2; Fat, 72.2; Protein, 51.7; 
Crude Fibre, 66.0; Nitrogen Free Extract, 66.2. 
The second experiment with corn fodder, dent corn, drilled thinly in 
rows, cut August 20, some ears matured corn which were husked out before 
cutting to be fed, gave the following: Dry Matter, 56.66; Ash, 43.64; Fat. 
66.08; Protein, 36.04; Crude Fibre, 56.71; Nitrogen Free Extract, 60.60. Jor¬ 
dan and Hall give the following coefficients for dent and flint corn (mature): 
Dry Matter, 68.2; Ash, 30.6; Fat, 73.9; Protein, 56.1; Crude Fibre, 55.8; Nitro¬ 
gen Free Extract, 72.2. 
It will be noticed that our coefficients are lower than the quoted ones, 
which are averages. 
The average coefficients obtained for alfalfa hay in the first series of 
experiments were: Dry Matter, 52.04; Ash, 45.65; Fat, 90.85; Protein, 66.69; 
Crude Fibre, 47.76; Nitrogen Free Extract, 56.69. 
The sample of hay used in this experiment contained an unusually low 
percentage of ether extract, 0.80, and was not a first-class hay, neither was 
it a decidedly inferior hay. 
The second experiment in which a prime, first cutting hay was used gave 
the following: Dry Matter, 63.95; Ash, 57.67; Fat, 29.86; Protein, 72.54; 
Crude Fibre, 49.93; Nitrogen Free Extract, 72.89. The animals used in the 
first experiment were mature sheep probably 4 years old; those used in the 
second were young sheep, so-called Mexican lambs, about 1 year old. 
The average digestion coefficients of first cutting alfalfa hay, which I 
obtain by using all the data available at this time, not including my own, are: 
Dry Matter, 61.00; Ash, 51.58; Fat, 53.81; Protein, 74.40; Crude Fibre, 47.11; 
Nitrogen Free Extract, 72.49. 
There is here a substantial uniformity except in the case of the coeffi¬ 
cient for the fat or ether extract, which we hold to be of little or no value, 
which is emphasized by the extreme results obtained in the first series of 
experiments. See remarks at conclusion of first series of experiments. 
We mean to indicate by the negative sign that there was 90.85 per cent, 
more fat, ether extract, in the feces than in the hay eaten. 
Native hay is seldom composed of the same mixture of grasses even 
if cut from the same ground, but in different years. It is therefore diffi¬ 
cult to obtain comparable samples. 
We obtained for a sample grown in the neighborhood of Fort Collins the 
following coefficients: Dry Matter, 59.78; Ash, 43.32; Fat, 47.09; Protein, 
60.90; Crude Fibre, 61.36; Nitrogen Free Extract, 62.01; and for another 
sample grown in the Box Elder Valley about 23 miles north of the Poudre 
Valley the following: Dry Matter, 50.53; Ash, 42.52; Fat, 20.55; Protein, 
62.33; Crude Fibre, 55.56; Nitrogen Free Extract, 51.30. The hay used in the 
second series of experiments seems to have been a decidedly less digestible 
one than that used in the first experiment; it represented a different mixture 
of grasses, the former consisting largely of Colorado blue stem. 
Jordan and Hall give for meadow hay, with which our “native hay” is 
possibly more nearly comparable than with any other fodder, the following: 
Dry Matter, 54.3; Ash, 29.4; Fat, 44.7; Protein, 63.4; Crude Fibre, 54.5; Nit¬ 
rogen Free Extract, 55.9. 
Timothy hay is grown in large quantity in some of our mountainous dis¬ 
tricts and is of superior quality. We obtained as digestion coefficients for 
this hay, in the first series: Dry Matter, 56.71; Ash, 34.14; Fat, 31.88; Pro¬ 
tein, 58.37; Crude Fibre, 54.61; Nitrogen Free Extract, 62.80. In the second 
series: Dry Matter, 51.03; Ash, 65.63; Fat, 69.32; Protein, 43.35; Crude 
Fibre, 36.08; Nitrogen Free Extract, 54.99. 
