28 



Cotton seed meal in the grain ration. 



November 13, 1900, after the conclusion of the ex- 

 periment just described, one pig from each of lots B, 

 C, and D was kept for five weeks on an exclusive grain 

 diet made up of one-fourth by weight of cotton seed 

 meal and three-fourths corn meal. They were given all 

 they would eat but did mot relish the food. 



During the five weeks they gained 67.5 pounds, requir- 

 ing 4.68 pounds of food per pound of growth. This is 

 an average daily gain of .64 of a pound per head. Near 

 the end of the fifth week the attendant noted the un- 

 thrifty appearamice of the pigs, buti no death occurred. 



The amount of cotton seed m^al which had produced 

 sickness but not immediate dteath, was 25.5 pounds per 

 shoat of an average weight of 117.6 pounds. Hence the 

 toxic dose of cotton seed meal was here, per 100 pounds 

 of live weight, 21.4 pounds, of .61 of a pound per day 

 for 35 days. 



After eating this grain, containing 25 per cent of 

 cotton seed meal, for five weeks the pigs were slaugh- 

 tered and a. sample of lard from the fat of the body was 

 examined by Prof. C. L. Hare, who found the mielting 

 points to be as follows : 



Melting point of lard from cotton seed meal ration. 



