130 CONCRETE OR CEMENT SILOS. 



curved enough so that 25 of them would lay a complete 

 circle, 16 feet in diameter in the clear. Proportioned the 

 cement and sand 1 to 5, i. e., 1 part cement to 5 parts 

 sand. It took about 50 yards of sand and 20>5 sacks of 

 cement. I also laid a No. 9 wire between each layer of 



Fig. 42. Cement block silo. The kind built by Mr. Dunlap of 

 Centre, Rails county, Mo. Courtesy Hoard's Dairyman. 



