408 



Rural Architecture. 



walls would crack the cement. It should be understood 

 further that on account of the fact that the layer of cement 

 is so thin it is a matter of greater importance to keep the 



/ <* 



H 



FIG. 202. Showing an all-wood round silo on stone foundation. H 

 resents a method of sawing boards for the conical roof. 



rep- 



surface whitewashed to prevent the acid from softening the 

 cement and rendering it porous. It is because of this also 

 that two layers of lining with paper between are recom- 

 mended. 



