146 



BOARD OF AGRICULTURE. [Pub. Doc. 



the land or air, and therefore contain it in themselves. You 

 might put them Avith Indian corn as ensilage or fodder, and 

 get good results from the combination. 



In dairying we can protect the soil as well as feed tlie cow, 

 because when wheat is grown and fed to cows, if butter only 

 is sold, it carries off only an infinitesimally small portion 

 of nitrogen from the farm. A ton of hay will carry off from 

 the farm as much of the elements of fertility as eighty- 

 seven tons of butter. 



