No. 50.} 
337 
The wind, during the whole period, was strong and uniform from 
the north. Until about 8 o'clock, the summit was swept by a cloud of 
of rain and vapor. This gradually disappeared, producing rapid alter- 
nations of storm and sunshine. About 10 o'clock the sky became al- 
most entirely clear. 
It appears from the above notes, that the whole range of the column, 
embracing the slight but unavoidable errors of observation, is less than- 
6 tenths of a millimetre, or less than three thousandths of an inch.—" 
The uniformity of the force and direction of the wind, is a circumstance 
favorable to correct results not always found on mountain peaks, which 
are liable to be swept by variable and conflicting currents. 
From some misunderstanding in regard to time, and from not attain^ 
ing the summit as early as I anticipated, only three sets of observa- 
tions synchronized sufficiently to be employed. The remainder, how- 
ever, answered the important purpose of verifying those that were 
taken. 
The following are the observations made at Burlington : 
Dates. 
Att. 
Ther. 
Det. 
Ther. 
Cor. 
columns. 
1 
Aug. 14, 5h 10^ am 
18.0 
13.7 
760.43 
Wind northeasterly ; cloudy. 
2 
do 7h 40^ a m 
18.0 
13.6 
760.53 
do do 
3 
do ehlO'am 
18.0 
13.9 
760.73 
do do 
4 
do 6h 40^ a m 
17.9 
14.9 
761.13 
do do 
5 
do 7hl0^am 
18.0 
15.2 
761 .33 
do do 
From the little time allowed, in my first observation on the summit, 
for the mercury to acquire the temperature of the air, and for taking 
the requisite precautions, the result, 47, errs in deficiency. The ele- 
vation derived from the three sets is 5337.5 above tide, which differs 
from the three results only by 12.2 and 10 feet. 
According to the barometrical measurement by Mr. Redfield and 
Prof. Emmons, as given in the New- York Geological Report of 1838, 
the elevation of this peak is 5,467 feet. The difference between these 
results is not so considerable as of itself to impair confidence essential- 
ly in either, and they should therefore be regarded rather in the light 
of mutual verifications — at least so far as concerns barometrical mea- 
[Assembly, No. 50.] 43 
