16 



THE POLK SYSTEM 



fact in 1882 only 92 American farmers used the silo. Later and 

 more careful investigations by agricultural schools and scientific 

 farmers revealed the true worth of the silo until it is to-day an un- 

 disputed fact that no man who raises stock for any purpose what- 

 ever can afford to be without one. There are over 500,000 silos in 

 the United States at the present time. 



16 x 50 feet monolithic silo of State Hospital Farm No. 1, Fulton, 



Missouri, showing cutter in position for filling. 



Built by Polk System. 



"They are not built of pieces and they 

 cannot go to pieces. 



