DAVIS : RIVER TERRACES IN NEW ENGLAND. 



283 



Figure 3, or better in Figure 4. This factor in the development of 

 terraces was first recognized, as far as my readiug has gone, by Hugh 

 Miller (the younger), whose view will be presented in abstract on a 

 later page. 



Fig. 3. 



Although the controlling ledges occupy a very small fraction of the 

 terrace length, they are of dominant importance ; and there can be little 

 doubt that the finest flights of stepping terraces in New England are to 



Fig. 4. 



be thus explained. Terraces of the kind shown in Figure 5 are different 

 from those here studied, as will be more fully stated in the next 

 section. 



Fig. 6. 



When the terrace pattern is considered in plan as well as in cross- 

 section, it appears that our terraces may be accounted for, first, by the 



