275 



" This coincides with the results of our experiments last year, in that 

 nitroiieiious food seems to largely art'ect the growth of wool. It seems 

 to show further that c\ en a small increase in the nitrogenous matter of 

 a ration has a decided influence on the growth of the wool." 



•• In the experiments of 1888 the ])ercentage was not so great in 

 favoi" of the laml)^ fed on nitrogenous food. In ('X])eriments of 1889, 

 lot I^' ga\" 72 per cent more wool than lot III. In experiments of 

 188S lot I aave oo per cent more wool than lot II." The Aveights of 

 the di-essed carcasses, and the various organs for each animal, and the 

 a-v'erages foi- each lot, are also stated in tables. " In the proportion of 

 dressed to live weight is to be found the main discrepancy between the 

 experiments of 1888 and 1880. Last year the dressed weight of the 

 nitrogenons-fed lambs was 9 ])er cent greater than those fed carbona- 

 ceous food. This year the diU'erence was about as much in the other 

 direction." 



The following jiai'ts and organs were greater l)y the following per- 

 centages in ])ro])()rtion to the live weight : 



In 1880, (1) in the lambs fed on niti'ogenons food: Wool 44, kid- 

 neys 18, blood 10. heart 40, liver 13, Inngs 18; (2) in the lambs fed on 

 carbonaceous food, dressed weight 13, caul fat 242, kidney fat 198. 



In 1888, (I) in the animals fed on nitrogenous food: Dressed weight 

 9, wool 2(), caul fat 13, kidneys 13; (2) in the animals fed on carbona- 

 ceous food, heart 2(i. blood 9. liver 4. lungs 8. 



Sninmari/. — " The weight of evidence of all of our experiments, to- 

 gether with results ol)tained by other experimenters in the same field, 

 seem to show : 



" That corn, as an exclusive grain ration, does not give the best re- 

 sults, either in amount, quality, or economy of production, wdien fed 

 to growing or fattening animals. 



''That the amount of water drunk (especially in the case of our 

 lambs) is a j^retty certain indication of the rare of gain. 



" That the production of wool is A'ery greatly dependent upon the 

 nitrogen in the ration." 



Manvridl rahw of the nitioiis. — On the sui>position that 80 per cent 

 of the uianiirial xaliic of the food is recovered in the mainn'(\ the ma- 

 jnirial value of the ration of each lot would be as follows, reckoning 

 nitrogen at 17 cents per pound, phosphoric acid at 7, and potash at 4^ : 



Lot. ' Cost of 



ration. 



Manurial 

 value. 



Lot III (Carbonaceous) $3.70 



Lot IV (Nitrogenous) 4.66 



Lot V (Intermediate, with roots) 4.78 



Lot VI (Intermediate, without roots) _ 4. .51 



$1.12 

 3.56 



•Z. 10 

 1.97 



Cost of 



ration less 



value of 



manure. 



$2. .58 

 1.10 

 3.68 

 2.54 



This table shows '' that while the first cost of the ration of the 

 nitrogenous-fed sheep was larger than that of the carbonaceous, yet 



