178 



Twenty-fourth Repori on the State Museum. 



1 



hazardous traveling, at nightfall reached the boat, where our extra 

 provisions and baggage were found undisturbed. 



During the descent, near the foot of the mountain, we observed 

 some scattering giant white-pines, some of which seemed to be 

 between 150 and 200 feet in height, with diameter in proportion. 

 The rest of the forest was dwarfed by their presence. On my return 

 to Albany, I passed out of the wilderness by the Fulton chain of 

 lakes, into Lewis county, and thence via Utica. 



The barometer used was a mercurial cistern instrument, deer-skin 

 bottom and brass scale. Before starting upon the expedition it was 

 compared with the standard at the Dudley Observatory, and fortu- 

 nately, for in returning it was broken. The deductions from the 

 observations hereinbefore given have been calculated by Prot. Hough 

 of the Dudley Observatory, which was the station for corrections. 

 I inclose a note giving the results : 



" Dudley Obseevatoey, ) 

 Dec. lUTi, 1870. f 



" Dear Sik. — In accordance with your request, I have computed 

 the height of your stations on Mt. Seward, from the barometrical 

 observations you furnished me. 



" The observations were reduced to thirty-two degrees Fahrenheit, 

 and compared directly with the records given by our automatic 

 registering instruments. 



" The following is the data used : 



DATE, 



OCTOBEK, 1870. 



stations. 



Mt. Seward. 



Dudley Observatobt. 



No. of 



readings. 



Barometer 

 33 deg. 



Temp, of 

 air. 



Barometer 

 32 deg. 



Temp, of 

 air. 



14th, 8.45 a.m. 

 14th, 3 . 30 p. M. 

 15th, 9.15a.m. 



No. 1 

 " 2 

 " 3 



4 

 4 

 6 



28.144 



25.905 



25.580 



54° 

 38° 

 43° 



29.769 

 29.779 

 29.980 



55 

 56 

 50 



"As your barometer had previously been compared with our 

 standard, and found to give essentially the same readings, no correc- 

 tion for scale has been necessary. 



" At the time of the observations at the three stations, the varia- 

 tion of pressure was as follows : 



