ROOT CROPS. 



229 



given to slieep." And again lie says, '' On further inquiry I 

 have learned that this observation is confirmed by many practical 

 feeders. Mangolds, therefore, ought not to be given to sheep."* 

 The following table shows the quantity of milk yielded by 

 cows fed at the Albert Farm on mangolds, as compared with 

 that given by the same cows when fed on Swedish turnips. 

 The turnips and mangolds were prepared in the same manner 

 (washed and sliced,) and in both instances the cattle were out 

 for water and exercise an hour daily ; and their treatment in 

 every other respect was precisely similar : — 



The change of food from Swedes to mangold took place on 

 the 17th, and with the view of preventing the secretion of milk, 

 either as regards quantity or quality, being influenced by the 

 former mode of feeding, the second experiment was not made 

 until the 26th. As fully three-fourths of the cows were heavy 

 in calf, and the quantity of milk yielded by them naturally on 

 the decrease, the period which elapsed between the trials on the 

 15th and 16th and those on the 26th and 27th would, to some 

 extent, lessen the result in favor of the mangolds. 



The annexed table gives the results of an experiment recently 

 made at the Albert Farm, by churning some of the whole milkf 

 yielded by the cows when fed on mangolds and oat straw : — 



* " On the Chemistry of Food." p. 30. 



f The Lactometer indicated 11 per cent, of cream. 



