The Construction of the Stave Silo. 



487 



pose. Another form of roof which is now doing service over a 

 silo 16 feet in diameter by 24 feet deep is shown in fig 82. 



This silo was constructed in Tompkins County in the summer 

 of 1898. No roof was put on until after the silo was filled. 



Fig. 82, — Shows a roof which is doing good service. 



Then pieces of 2 x 4 scantling were nailed to the staves, plates 

 were laid across the top and the roof supported as shown in the 

 figure. The silage in this silo when examined in February 

 directly after the temperature had been at zero for several days, 

 and some of the time as low as 20° below zero, was found to be 

 in most excellent condition. It was frozen around the edge next 

 to the staves, but the frost had not penetrated for more than six 

 inches. The top of the silage had been covered over with a foot 



