148 Colcord's System of 



other in all places, so that under pressure the 

 fodder may descend with the least lateral 

 pressure, and the covering may come down 

 evenly without pressure upon the walls ; the 

 forage kept spread evenly while being placed 

 in the silo, so that it may be pressed to equal 

 density. The cover should be of 2-inch plank 

 laid across the silo, with 6x6 timbers laid 

 across the plank lengthwise of the silo to keep 

 the cover level ; and the pressure should be 

 upon the 6x6 timber. The best pressure is 

 produced by having i ^-inch iron rods built into 

 the side walls from the bottom to 6 feet above 

 the walls, placed perpendicular in the centre 

 of the walls, about 4 feet from the end walls 

 and 8 feet distance apart, with 8x8 timber 

 (to a 12-foot span) connecting opposite rods, 

 the rods passing through i^-inch holes 

 through the ends of the timbers, securely 

 fastened on top by double nuts and large, 

 heavy washers under them. The long screws 

 on the rods should be about six threads to 

 an inch. 2-inch jack-screws should be used 

 between the timbers running lengthwise and 

 across the silo. 



The heavy strain upon the rods will assist 

 in holding up the walls, the corn can be kept 

 level, and all time, trouble, and expense of 

 weighting avoided 



