68 



PHYSICAL GEOGRAPHY. 



East Branch is marked "Merrimack R." The names Hancock Br. and 

 "Moosehillock" Br., and the old form Ammariscoggin, are also found on 

 this map. In his short notice of tire productions and natural features 

 of the state, the author remarks, referring to its lake and 'mountain 

 scenery, "It may be called the Switzerland of America," — a term which 

 has been generally adopted in descriptions of New Hampshire. 



The first carefully prepared map of the White Mountains was published 

 by Prof. G. P. Bond, of Cambridge, Mass., in 1853, from original triangu- 

 lation. The history of the efforts of the geological survey to secure 

 more perfect maps of this region, with the result of these labors, is given 

 in another part of this work. 



Fig. 7- — LANCASTER AND THE WHITE MOUNTAINS. 



Considerable interest appears to have been awakened as to the altitude 

 of these mountains, on account of the conflicting results of barometrical 

 measurements; and we find that in July, 1820, a party of engineers and 

 others from Lancaster visited the whole range between the notch and 

 Mt. Madison, and, on a second visit, measured the altitudes with a spirit 



