618 



EXPERIMENT STATION RECORD. 



of olive oil was added to tlie ration of sheep No. 1 and 50 gm. to that 

 of No. 2. In the third period, which lasted days, the amount of oil 

 was increased to 120 gm. and 100 gm., respectively, and in the fourth 

 period, which lasted 5 days, to 180 gm. and 150 gm., respectively. 



The coetficients of digestibility of pi^otein are given for each sheep 

 during each period in the following table: 



Coefficients of digestibility of protein iu experiments ivith sheep. 



Hay and linseed cake 



Do 



Hay, linseed cake, and 60 gm. of olive oil 



Haj-, linseed cake, and 50 gm. of olive oil 



Hay, linseed cake, and 120 gm. of olive oil 



Hay, linseed cake, and 100 gm. of olive oil 



Haj', linseed cake, and 180 gm. of olive oil I No. 1. . 



Hay, lin.seed cake, and 150 gm. of olive oil i No 2. 



L: : 



The daily nitrogen balance for each sheep for each period is given 

 in the following table : 



Nitrogen balance per day in experiments ivith sheep. 



Animal. 



Hay and linseed cake No. 1... 



Do No. 2... 



Hay, linseed cake, and 60 gm. of olive oil i No. 1 . . . 



Hay, linseed cake, and 50 gm. of olive oil ! No. 2. .. 



Hay, linseed cake, and 120 gin. of olive oil | No. 1... 



Hay, linseed cake, and 100 gm. of olive oil No 2... 



Hay, linseed cake, and 180 gm. of olive oil ■ No 1 . . . 



Hay, linseed cake, and 150 gni. of olive oil i No. 2... 



Nitrogen in- 



Gain ( + ) 

 or 

 Food. I Urine. Feces. los8(— ). 



Grams. 

 31.05 

 24.42 

 31.65 

 24.42 

 31.65 

 24.42 

 31.65 

 24.42 



Grams. 

 22.00 

 17.51 

 20. 92 

 17.07 

 19.01 

 16.14 

 18. 62 

 15.18 



Grams. 

 9.10 

 7.43 

 9.23 

 7.51 

 8.79 

 7.57 

 9.49 

 7.12 



Grams. 

 +0.55 



— .52 

 + 1.50 



— .16 

 +3.85. 

 + .71 

 + 3.54 

 + 2.21 



The authors discuss the experiment at length. The following are 

 the principal conclusions: 



The amount of water drunk was increased by adding fat to the ration, 

 though not proportionately to the amount added. The addition of fat 

 to the ration diminished the excretion of nitrogen in the urine, and this 

 decrease was greater the more fat was added, the limit being reached, 

 in the author's opinion, the first day of the fourth period. In the last 

 days of the fourth period the excretion of nitrogen in the urine increased 

 to about the same as when no fat was added to the ration, though this 

 fact is not shown by the averages quoted above. The addition of the 

 maximum quantity of fat to the ration did not influence the digestibility 

 and assimilation of protein, as was the case when large quantities of 

 starch were added. 



The distribution of nitrogen in meat, Salkowski and Geiske 

 {Centbl. med. Wlss., 1896, ^Vo. 48; ahs. in Ztfichr. Fleisch- nnd 31ilchhy(/., 

 7 (1897), No. 4, pp. 76, 77). — All meat contains some nitrogen which is 



