21 8 BAROMETRICAL MEASUREMENT of 



feems from thefe caufes that inaccuracies are moft likely 

 to occur in the firft ftage of afcent : Hence I am inclined 

 to think that the Blue Ridge is not eftimHted high enough. 

 Thefe objections do not occur in fo great a degree in the 

 high country. 



Mr. Jefferfon fuppofes the Peaks of Otter to be about 

 4000 feet high. This place is about 60 miles S. W. of 

 that where I croffed, 1 had therefore no opportunity of 

 feeing it. 



Pleafe to obferve that my undertaking thefe experi- 

 ments was incidental to my having occafion to make the 

 journey : had it been a preconcerted plan, more accurate 

 and more minute obfervations might Jiave been expelled. 

 If it fhould be found interefting enough to deferve the 

 notice of the Society, I Ihall be abundantly gratified. 

 I am, with great Refpecft and Efteem, 



Your moft Obedient Servant. 

 JONATHAN WILLIAMS. 

 To Mr. R. Paiterfon. 



P. S. If on examination there fhould be reafon to 

 believe thefe heights tolerably accurate, the height of Rich- 

 mond from the fea fhould be added to each elevation. 



A Me. 



