70 



CRANBERRY CULTURE. 



tensive of late, that it has frequently been found neces- 

 sary to construct massive dams of eart-i, similar to those 

 used for mill-ponds ; and where the surface to be covered 

 is very large, it is better to incur this expense than to 

 leave the vines uncovered in winter. 



Where a small head of water, say about one foot only 

 is required, the dam may be made by throwing up against 

 the turf fence an embankment of sand, and sodding the 



Fio:. 39. — EMBANKMENT SUPPORTED BY A TUKF FENCE. 



face of it with turf, to prevent its being washed down. 

 (See fig. 29.) 



A dam of this character may be seen at our twenty- 

 acre meadow, near New Lisbon, rendering efficient ser- 

 vice where a head of two feet is required. 



The same rule applies to this as to other barriers for 

 holding water, viz. : No muck should be used in its con- 

 struction, and, if possible, allow it to settle thoroughly 

 before raising a permanent head. 



