Nichols: The vegetation of Connecticut 



251 



Chicago region,* the increased exposure which follows the widening 

 out of a clay ravine may have a disastrous efifect on the ravine flora. 



Fig. 5. Forest of chestnut, white oak, red oak, etc., along a sandy bluff border- 

 ing West River, New Haven. Elsewhere along the bluff, hemlock, beech and bass- 

 wood are more or less abundant. 



"The rich mesophytic herbs, including the liverworts and mosses, 

 dry up and die, . . . and a xerophytic undergrowth comes in. . . . 

 * See Cowles. H. C, 1901, op. cit., pp. 90-^3. 



