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 ; 



Ist. That A, kept on miOt alone, weighed at birth .... 88 lbs. 

 At the age of 452 days 771.0 



Total increase 888.0 



Increase per day 1^ 



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



weighed at birth 8a6 lbs. 



At the age of 224 days 404.2 



Total Increase 820-6 



Increase per day 1.4 



8d. That C, on hay-tea, 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 " 



O " 118 " 906 " " 



The mininum ration for the maintenance of calves, to which 

 M. Perrault comes from his experiments, differs little from that which 

 we think amply sufficient at Bechelbronn ; and our animals certainly 

 are not inferior to those of Feuillasse. This fact may be judged of 

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

 elements of contrast with M. Perrault's B and C : 



Sophy weighed at birth 100.1 lbs. 



At the age of 102 days 279.4 



Total increase 179.8 



Increase per day 1.76 



Food coninmed : Milk 525 parts, weighing 684 lbs.— hay 297 lbs. 

 Hay 689 



In all 886 



Rosa at birth weighed 96.8 lbs. 



At the age of 289 days 478.0 



Total increase 876.2 



Increase per day^ 1.58 



This calf consmned : Milk 528 pints, weighing 684 lbs.— hay 297 lb& 

 Hay 1778 



In all 2070 



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

 •Uted. Assuming milk to consist of 12.61 dry matter, and 8T.89 water, 1 find by 



