No. 4.] FAR^r WATER SUPPLIES. 319 



by sinking a well in low ground at almost any point, provided 

 it is sufficiently distant from possible sources of pollution; but 

 wells sunk in the immediate neighborhood of swamps will ordi- 

 narily not supply good water, and it is generally best in swampy 

 regions to locate the well on the upland 50 to 100 feet from the 

 swamp, if practicable. The conditions in some cases are such, 

 however, that waters can be taken from the edge of a swamp 

 or even from beneath its surface and good water secured. 



