INDEX 
Page. 
Reasons for presenting this Bulletin . 3 
Differences between hays made from leguminous plants and grasses 4 
Alfalfa hay sensitive to moisture, extent of injury caused by rain .... 4 
Native hay, grasses composing one sample . 5 
Alfalfa hay used in first series, description and comments . 5 
Reasons stated for giving first series of experiments with alfalfa hay. 6 
Age of sheep used in first series . 6 
Fodders experimented with in first series . 6 
Duration of experiments, first series . 6 
Corn fodder, analytical details of first series . 7-8 
Average coefficients found for corn fodder, first series . 8 
Corn fodder used in first series described . 8 
Native hay, analytical data, first series . 9-10 
Native hay, average coefficients found in first experiment. 10 
Meadow grasses, average digestion coefficients . 11 
Native hay used in first series of experiments described . 11 
Timothy hay, analytical data, first series . 11-12 
Timothy hay, average digestion coefficients found in first series .... 13 
Timothy hay used in first series described . 13 
Alfalfa hay, analytical data of first series. 13-15 
Alfalfa hay, average digestion coeficients obtained in first series .... 15 
Alfalfa hay, average digestion coeficients obtained by other ex¬ 
perimenters . 15 
Average digestion coefficients found for alfalfa in first series lower 
than those given by others •. 15 
Ether extract yielded by feces, fecal matter dissolved, the same 
though different samples of hay were used. 16 
Preparation and taking of sample of alfalfa hay used in first series . . 17 
Extraction with petroleum ether, Bp. 35°-50°. 17 
Extraction with petroleum ether, Bp. 50°-60° . 17 
Anhydrous ether dissolves more than petroleum ether . 17 
Extraction with petroleum ether gives same coefficient for fat as 
anhydrous ether . 18 
Bile products do not explain low coefficient . 18 
Chlorophyll in feces .■. 18 
Analytical errors do not account for low coefficients found for fat. 19 
Changes in .the hay itself do not account for low coefficient found 
for fat . 19 
The soluble fecal matter in the feces is not intimately dependent upon 
ether extract in hay and is probably the cause of the low 
coefficient found . 19 
Second series, reasons for making it . 20 
Fodders experimented with in second series . 20 
