THE POLK SYSTEM 



25 



that the cost is too great. We wish to meet this objection square- 

 ly in the face by saying that the monolithic concrete silo is 

 the cheapest silo that can be built. In the first place there is only 

 one cost to the monolithic concrete silo, and that is the first 

 one. When you have paid that, there is nothing more to go out 



for repairs or a new 



silo. A nonpermanent 

 silo is a constant foe 

 to a bank balance; you 

 are never through 

 paying for it until it 

 has burned up, fallen 

 down, or been thrown 

 away. Any article 

 costs as much as you 

 spend for it and on it 

 plus 100 per cent, 

 when you have to re- 

 place it. The mono- 

 lithic concrete silo 

 never costs but once, 

 and there is absolutely 

 no depreciation in val- 

 ue. For it, total cost 

 and first cost are one 

 and the same thing. If 

 you build a permanent 

 silo the satisfaction of 

 having been wise and 

 far-sighted will re- 

 main long after you 

 have forgotten the 

 price you paid. 



We do not advise the building of a roof because, with our con- 

 crete silo the roof is not necessary for the preservation of ensilage, 

 except in extremely cold climates. Moreover the elements have 

 no damaging effect on the interior of our silo a claim which 

 other types of construction can not make. We have seen less 



18 x 45 feet Silo under construction. P. A. Quanstrong, Genoa, 

 Illinois, Contractor. Polk System. 



"They are not built of pieces and they 

 cannot go to piece*. ' ' 



