2 GUIDE TO LOCALITIES. 



interior is needed to emphasize the contrast between the compara- 

 tively even and extensive uplands and the relatively narrow and 

 steep-sided valleys that interrupt them. Gardner, on the Fitch- 

 burg railroad, is agood point to illustrate these features. A drumlin 

 crowned by a reservoir just north of the village offers an exten- 

 sive view, including Wachusett in the southeast and Monadnock 

 in the northwest. A walk over Hoosac mountain in western 

 Massachusetts is a still more instructive excursion in this regard : 

 Deerfield valley, 1,000 feet or more deep, being almost eaSon- 

 like in contrast to the Berkshire highlands in which it is incised. 

 The view from West Peak, near Meriden, Conn., is perhaps more 

 satisfactory than any other. By considering all of these features 

 together, it ia believed that the explanation of the uplands and 

 valleys of southern New England in the manner above suggested 

 gives a reasonable account of them ; but it should be understood 

 that the peneplain of the uplands was never very smooth, and 

 that in many parts of the district it is dissected so thoroughly to- 

 day as to be recognizable with difficulty. 



Literature. 



Davis, W. M. — The geological dates of origin of certain topo- 

 graphic forms on the Atlantic slope of the United States. (Geol. Soc. 

 Am., Bull., vol. 2, pp. 541-542, 545-586.) 



Davis, W. M. — The physical geography of southern New England. 

 (Nat. Geog. Monographs, vol. 1, No. 9.) 



Davis, W. M. — Geographical illustrations. Harvard University, 

 1893. 



BOSTON HARBOR. 



The most notable features of Boston harbor are the drumlins 

 which stand forth as numerous islands, and the extensive beaches 

 which tie many of the islands to each other and to the mainland. 

 The bed-rock borders of the coastal reentrant are found at Lynn 

 and Nahant on the north, and at Nantasket and Cohasset on the 

 south ; but the harbor proper is much restricted from these limits, 

 by the group of drumlins extending from East Boston to Winthrop. 

 An afternoon excursion by boat to Pemberton landing (Hull), 

 thence by rail to Nantasket and back to Boston by boat, forms a 

 pleasant and instructive outing. On the way down the harbor, 

 many drumlins are passed in various stages of destruction. One 

 of the outermost islands, bearing " Boston light, " exhibits the 



