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back, the difference in weight being the amount consumed. A 

 fresh pailful was then weighed out, and the process repeated. 

 This was kept up during the whole course of the experiment. The 

 water was warmed when it was first put in, and during the cold 

 weather the lambs soon learned to take nearly all their water as 

 soon as fresh water was given them. From the first a marked 

 difference was seen in the amount of water consumed by the dif- 

 ferent lots, and this difference continued through the whole course 

 of the experiment. Below is given the total amount of water 

 drank : 



Lot III drank 308 lbs., or 1.03 lbs. per lamb per day. 

 Lot IV drank 1185 lbs., or 3.95 lbs. per lamb per day. 

 Lot V drank 735 lbs., or 2.45 lbs. per lamb per day. 

 Lot VI drank 847 lbs., or 2.82 lbs. per lamb per day. 



The very much larger quantity of water consumed by the lambs 

 fed a highly nitrogenous ration is at once apparent. It will be 

 .seen that Lot IV drank nearly four times as much as Lot III (fed 

 carbonaceous food), and about 60 per cent, more than Lot V. 

 These three lots were all fed roots in equal kind and quantity, so 

 that it would seem that the different amounts of water consumed 

 must be due to the nitrogen in the ration. The same thing was 

 noticed in the experiments reported in Bulletin No. II, although 

 in that experiment the water was only weighed for six days at one 

 time in the course of the experiment. In that case Lot I (fed on 

 nitrogenous food) drank three times as much water as lambs fed 

 on corn and hay. 



Lot V and Lot VI were fed on the same ration, except that Lot 

 VI had no roots. Probably for this rea.son they drank about 15 

 per cent, more water. 



THE GAIN IN LIVE WEIGHT. 



Below is given, in tabular form, the gain in pounds, and also in 

 per cent, of weight at beginning, of each lamb in each lot : 



