200 



FREDERICK G. CLAPP 



Topography.— A glance at the topographic map shows that the 

 region may conveniently be divided into the following subdivisions: 

 the Western highlands, the Dover and Dedham highlands, the Brook- 

 hne and West Roxbury highlands, the Needham-Waltham valley, 



Fig. I. 



and the regions intermediate between uplands and lowlands, the 

 last division consisting of the greater part of the towns of Newton, 

 Needham, and Wellesley. Another feature of importance is the 

 broad area of modified drift extending westward from Wellesley to 

 the Sudbury River, and overlying the site of a broad preglacial 



