154 



LAND DRAINAGE 



FIG. 65. Plan, described in Bulletin 229, Wisconsin Experiment Sta- 

 tion, for removing drainage water by means of a gravel-filled well 

 and tile. 



The following facts are gathered from one of the Water 

 Supply Papers of the United States Geological Survey. 1 



1 Fuller. Water Supply Paper No. 258. 1910. U. S. Geol. 

 Survey. 



