438 REARING CALVES. 



It would have been desirable to have had these three calves 

 weighed immediately after the termination of the experiment ; as 

 this was not done, the results have not the whole of the precision 

 that seems desirable. Nevertheless, M. Perrault from his observa- 

 tions concludes ; 



1st. That A, kept on milk alone, weighed at birth ... 88 lbs. 

 At the age of 452 days 771.0 



Total increase 683.0 



Increase per day 1.5 



2d. That B, on the reduced allowance of milk 



weighed at birth 83.6 lbs. 



At the age of 224 days 404.2 



Total increase 820-6 



Increase per day 1.4 



3d. That C, on hav-tca, weighed at birth 111.2 lbs. . 



At the age of 101 days •.....••• 270.6 



Total increase 150.4 



Increase per day 1.67 



M. Perrault's general inference is, that the calf which had the hay- 

 tea ration grew more rapidly than either of the other two brought 

 up either on pure or on dilute milk. The differences, however, are 

 within the limits of the variations noted in animals that are reared 

 on the same ration. 



If we reduce the various articles consumed in these experiments 

 to food of the same nutritive value — to hay, for example — we find, 

 that— 



A consumed in 112 days, 1857 lbs of hay* 



B " 113 " 1137 " 



C " 113 " 906 " 



The mininum ration for the maintenance of calves, to which 

 M. rerrault comes from his experiments, diifoi-s little from that which 

 we think amijly sufficient at Bechelbronn ; and our animals certainly 

 are not inferior to tho.'^e of Feuilla.'ise. This fact may be judged of 

 by the following particulars, which I have selected as affording the 

 elements of contrast with M. l*erraults B and C : 



Sophy weighed at birth 100.1 lbs. 



At the age of 102 days 279.4 



Total increase 179.3 



Incroa.<c per day 1.76 



Food consumed : Milk 625 parts, weighing 6S4 lbs.— hay 297 lbs. 

 Hay 639 



In all 8S6 



Rosa at birth weighed 96.S lbs. 



At the age of 289 days 473.0 



Total increase 370.2 



Imroasc per day . 1.5S 

 This calf consumed: Milk 628 pints, weighing 6S4 lbs.— hay 2<i7 Iba. 

 Hay 1773 



In all 2070 



♦ Milk must be regarded in the light of forage, so that its equivalent should be 

 Btated. Assuming milk to consist of 12.61 dry matter, and 87.39 water, 1 find by 



