of New Hampshire. 39 



houVs, We left on the mountain our names and the date, in- 

 closed in a bottle, and cemented to tlie highest rock *. 



Height of the White Movntains. 



The great distance at which these mountains are visible, and 

 the apparent length of their ascent, have led to estimates of their 

 height considerably exceeding the probable truth. The Rev. 

 Dr. Cutler, who twice visited them, and took barometrical ob- 

 servations, computes the height in round numbers at 10,000 

 feet above the level of the sea. Dr. Belkr.ap, in his History of 

 New Hampshire, is persuaded that this coiuijutation is too mo- 

 derate, and that subsequent calculations will make the height 

 even greater. Mr. Eowditch has published in the Transactions 

 of the American Academy a logarithmic calcuh-.tion, founded 

 on the barometer as observed by Dr. Cutler and Professor Peck, 

 in 1804, which gives them an elevation of 7,055. 



Capt. Partridge, an engineer in the United States' service, 

 visited the mountains some years since, and took barometrical 

 observations on several of the principal peaks. His observations, 

 now in possession of Professor Farrar at the university, give to 

 the highest summit an elevation of only 6,103 feet. 



A mountain barometer, of Englefield's construction, earned 

 bv iVIr.Gravor our party, stood on the summit :'t noon at 24,23; 

 the accompanying thermometer being at 5/. At the same day, 

 at Cambridgcj the baionieter stood at 29,95, and the thermo- 

 meter at 76. This difference of the barometer, after making 

 the necessary corrections for temperature, and variation in the 

 surface of the cistern, would give, according to Sir H.C. Engle- 

 field's formula, a difference of 6,230 feet in the altitude of the 

 two ])laces. A logarithmic calculation was made, from the same 

 data, by Professor Farrar, which resulted in a difference of 6,194 

 feet. This number being added to thirty-one feet, the height 

 of Cambridge above tlie sea, will give 6,225 feet, which may be 

 assumed as the probable height of the White Hills above the 

 waters of the ocean. 



In favour of the correctness of the observations on which this 



* Parcc, viator, 



cui fiilmiiia p;ircont. — 



Hoc fragile inonuinoiUuni 



LcDiuel Shiiw, 



Nathaniel Tucker, 



Jacob Bi5:elijw, 



Franciscus C (-Jiay, 



Fraiiciscus Doutt, 



Bostoiiieiisc's; 



Die .Tulii 2do, A.li. 181C, 



Monte At'iocociiook superato. 



Lie rcliquerunt. 



com]nUatioti 



