320 SOILING CROPS AND THE SILO. 



silos. Whether the cement would last as well on 

 properly built stone silos without the brick facing 

 insides does not appear to have been determined, but 

 there would seem to be no good reasons why it 

 should not. 



The Outer Lining. — Where stone silos are prop- 

 erly constructed, there should be no necessity for 

 an outer lining of wood in any climate where corn 

 can be successfully grown for the silo. The stone 

 silo referred to in the preceding paragraph is located 

 between the forty-fifth and forty-sixth parallels of 

 north latitude, and in a climate that is stern and rig- 

 orous. The larger portion of the wall, which is 

 "twenty-six feet high, is unprotected, and yet Mr; 

 Edwards testifies that no trouble whatever has arisen 

 from the action of frost. 



Where it is deemed necessary, however, to pro- 

 tect a stone silo by lining it outside, the lining can 

 best be nailed to upright studs laid into the outer 

 wall while it is being built, but of course studding 

 may be used that is not thus laid into the wall. The 

 studs or strips thus placed do not require to be any 

 nearer than will suffice to properly sustain the siding. 

 Drop siding will be suitable. 



Tiie Roof. — The roof of the stone silo when 

 built outside may be constructed on the same plan 

 as that of any other silo. But because of the greater 

 duration of stone silos, it will probably pay to take 

 special pains in the selection and use of material last- 

 ing in character, as, for instance, metal roofing. 

 And since the stave silo is frequently built and used 

 from year to year without any form of roof there 

 would seem to be no good reason for not similarly 



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