19 



ascent 1160 feet: in this account tlie rapids of 

 Georgetown are taken at 37 feet, and the great fill 

 of Matilda, including its rapids, which extend three 

 miles above it, at 76 feet. 



From the mouth of Savage river to the place 

 called Moses Williams on the summit of the Al- 

 leghanies, in a space of eight miles and three quar- 

 ters, the ascent is 2097 feet, making in the whole 

 3257. . 



In Pennsylvania the height of the AUeghanies above 

 the flat country, according to Dr. Rush, is only 1300 

 feet; and in fact travellers observe, that we arrive 

 at them by a series of gentle and gradual ascents, 

 ■which are scarcely noticed. 



In the state of New York, the highest peak of the 

 Kaats Kill mountains, measured in 1798 by Peter de 

 la Bigarre,* was found to be 3549 feet above the le- 

 vel of Hudson's river, in which the tide fiows ten miles: 

 above Albany. 



In Vermont, KiUington peak, measured by Samuel 

 Williams as the loftiest of all the chain, is only 3454 

 feet.t 



Lastly, the White mountains in New Hampshire, 

 which are visible thirty leagues at sea, and which 



* Transactions of the Society of New York, Part II, p. 128. 



t See History of Vermont, by S. Williams, p 23. It is in one vol. 

 8vo. printed at Walpole, in New Hampshire, 1794. The author ob- 

 serves, that in these latitudes the region of constant frost is at 3t)66 

 feet. Mr. S. Williams, who mtist not be confounded with Jonathan, 

 was formerly professor of mathematics at Cambridge, near Boston, 

 and a clergyman, but at present lives retired in the state of Ver- 

 mont. 



