AMERICAN DIGESTION EXPERIMENTS. 



W. H. Jordan. • 



The purpose of arranging the following summary of American diges. 

 tion coefficients is to place them in a form convenient for reference and 

 use. The amount of work performed in this direction, when collected 

 in one mass, seems surprisingly large. We have for so long depended 

 upon German averages as an aid in calculating feeding rations that we 

 are slow, perhaps, in finding out the extent and value of our own figures. 

 But for some foods, as will be i)ointed out, we have far better figures 

 than any heretofore available. 



Twelve American experiment stations have made digestion experi- 

 ments. One hundred and fifty- four experiments, with as many distinct 

 samples of foods, are included in this work as here presented, involving 

 312 single trials. The exteut, character, and distribution of these experi- 

 ments can best be seen, perhaps, in tabular form. Quite a number of 

 exj^eriments for deterndning the digestibility of rations are not included 

 in this summary and a few are excluded that are considered defective. 



Experiments hy States. 



Colorado 1 



Maine 57 



Maryland 4 



Massachusetts 10 



Minnesota 5 



New York 7 



North Carolina 19 



Oregon 1 



Pennsylvania 40 



Texas 3 



Utah..... 2 



Wisconsin 5 



Animals used. 



Experiments. 



Cows 16 



Cow and goat 4 



Goats 7 



Goatu aud sheep 3 



Experiments. 



Sheep 83 



Steers 21 



Steers and sheep 4 



Swiue 8 



