336 
[Assembly 
Att. 
Det. 
Obs. 
Elevation 
above tide. 
Deviation 
fr'ra mean. 
Mt 
7h 0^ a m 
7.5 
7. 
335.00 
zyy . ou 
5d47 .dl 
1 rt CA 
Mt. 
7h 30^ a m 
8. 
7.5 
335.05 
299.50 
Mean, 
7h 15" am 
7.7 
7.2 
335.02 
299.50 
Mean elevation above tide, 
5337.51 
Mean of these observations, calculated by La Place's formula. 
50 
18. 
14.7 
381.57 
381.77 
5344.69 
7.2 
6.9 
334.95 
299 . 44 
The singular elevation of Mount Marcy, distinguishes it from the 
other objects of calculation in the above table, and entitles it to particu- 
lar consideration, more especially so, as some discrepancy exists be- 
tw^een the measurements that have hitherto been made. 
Passing over every other personal circumstance connected v^ith my 
ascent, I cannot but remark, that through the characteristic liberality 
of the Hon. A. Mclntyre, and the attentions of his agent, Mr. Porteus, 
I was supplied with every thing needful to my comfort as a guest, and 
the object of my visit materially promoted. 
The following table embraces all the observations that v^^ere made 
during my stay on the summit. The reductions of the mercurial co- 
lumns were made from a table executed by Prof. G. W. Benedict, with 
great care and precision, which has regard to the effect of temperature 
upon the brass scale, as well as upon the column of mercury. 
Times of observation. 
Alt Ther. 
Det. Ther. 
Cor. Columns. 
1 
Aug. 14. 
6h 7" a m 
6.6 
6.6 
633.67 
2 
do 
6h 30" a m 
7.0 
6.6 
633.57 
3 
do 
7h 0" a m 
7.5 
7.0 
633.72 
4 
do 
7h 30" a m 
8.0 
7.5 
633.71 
5 
do 
8h 0"am 
8.0 
7.8 
633.76 
6 
do 
8h 30" a m 
8.5 
8.3 
633.90 
7 
do 
9h 0"am 
9.2 
634.15 
8 
do 
9h 30" a m 
9.8 
9.5 
634.05 
9 
do 
lOh 0"am 
9.9 
9.5 
634.04 
10 
do 
lOh 30" a m..-. 
9.8 
9.5 
633.80 
