DRAINAGE 



101 



lets in Iowa reveals that in certain localities wells are emi- 

 nently successful; in others, they are failures after a very 

 short time. The successful wells seem to be those that 

 penetrate crevices in the rock stratum below the surface. 

 These wells seem less likely to become clogged with the fine 

 silt carried into the well by drainage waters. It is under- 

 stood that these wells are to be used for no other purpose 

 than as drainage outlets. 



Cost of Drain Tile. To those unfamiliar with tile drain- 

 age, it is thought that the following schedule of tile prices 

 at the factory will be useful. It is to be remembered that 

 prices must necessarily vary with factories, and freight in 

 many cases is a considerable item. 



Cost of drain tile at the factory. 



Schedule of Prices for Digging Ditches. The follow- 

 ing schedule prices have been in quite general use through- 

 out Iowa during the year 1911. 



Cost of digging tile ditches. 



