A, Guyot on the Appalachian Mountain System. 161 
For the Black Dome of North Carolina, the culminating point of 
the Black Mountains, (lately called also Mitchell’s High Peak, but 
not the former Mount Mitchell,) my measurements in 1856 gave 
_ 6702 feet, or, by adopting the modification of the coéfficient 
~ just alluded to, 6707 feet. A measurement by spirit level in the 
following year, 1857, by Major J.C. Turner, Civil Engineer, who 
had my figures in his hand, and who set out from my point of 
departure, gave an altitude of 6711 feet. 
o these coincidences I may add examples still more recent. 
Waynesville, the chief town in Haywood County, North Caroli- 
na, 27 miles from Asheville, being one of my principal stations 
for the measurement of all the culminating region of the Appa 
lachian System, I determined its altitude with care by a series of 
hourly correspondent observations extending through several 
days, one at Asheville, the other at Warm Springs, thirty-seven 
miles below the French Broad river, near the boundary of Ten- 
nessee, the altitudes of these two points being given by the Sur- 
vey of the Charleston and Cincinnati railroad which follows the 
lished elevations, already mentioned, to wit, the summit ¢ { the 
route which crosses the Balsam chain at the upper end of | 
creek, and the confluence of this creek with the Tuck 
twenty miles from Waynesville. In both cases, the railro dle 
lings agreed within a yard with the barometric measul 
___ these last being the hig ’ 
est, era Z 
;. «cn Dhese. 3 neasurements, entirely independent, and proceedin 
_ from the same given points, present an argument which is well 
‘tted to inspire confidence in barometric results obtained with 
SPs ead * ; A 
be ioe Toe 
