﻿Nichols: The vegetation of Connecticut 171 



are common throughout the state, but are especially characteristic 

 of the higher, more rugged sections. Morainal lakes of the last 

 two types are best developed in the lower, leveler, central portion 

 of the state. Lakes occupying depressions in stratified drift are 

 well exemplified by the "kettle-hole" ponds, so abundant in the 

 sand-plains near New Haven; while Lake Compounce is a good 

 illustration of a lake dammed in by an esker. 



River Lakes or Ponds for the most part are associated with 

 old-age, meandering streams. In general, they are of two sorts: 

 (i) Ox-bow and (2) Marginal. Ox-bow ponds, originating in 

 flood time as a result of the abandonment of old water courses, 

 are common along sluggish streams throughout the state (Fig. i). 



Marginal ponds are often caused by the deposition of sediment 

 along the bank of a stream at high water, thereby gradually 

 building up a sort of dike or ridge which cuts off the channel from 



