FEED AND CARE OF DAIRY COWS 



197 



According to King:^ "The weight of corn silage increases 

 with the depth below the surface, with the amount of water in 

 the silage, and with the diameter of the silo. In silos of small 

 diameters the amount of surface in the wall is so much greater 

 in proportion to the silage contained that the friction on the 

 sides has more influence in preventing the settling of the silage. 



"Capacity of Silos. — The capacities of silos increase more rap- 

 idly than do their depths, so much that a silo 36 feet deep will 

 contain nearly five times as much silage as one only one- 

 third that depth; and when it is remembered that there is less 

 necessary loss with deep silage the importance of depth will be 

 appreciated. 



"Doubling the diameter of the silo increases its capacity a 

 little more than four times, while trebling its diameter increases 

 its capacity nine-fold. It is evident, therefore, that the cost of 

 storage decreases rapidly with increase in the size of the silo." 



The following tables give the approximate capacities of round 

 silos in tons of corn silage. 



1 Bui. 59, Wisconsin Exp. Station. 



