18 
May 5th, 1873. Business Meeting. 
President Newerry in thechair. Fourteen persons present. 
On the recommendation of the Committee on Nominations, 
Mr. E.R. Straznicky, of the Astor Library, was elected a 
resident member of the Lyceum. 
On motion, it was resolved that a committee of five mem- 
bers be appointed by the President, to devise measures for 
the more effective carrying out of the objects of the society, 
such measures to be reported at the next business meeting. 
After the transaction of routine business, 
Mr. JAMES HyYAT?T gave an account of the recent labors 
of Dr. J. W. Doughty, of Newburgh, Orange Co., in obtain- 
ing accurate measurements of the heights of the principal 
mountains in the vicinity of that city. Dr. Doughty employed 
a line of 10,000 feet, measured on the ice of the Hudson, as 
the base of his triangulations, carefully testing and verifying 
his work. In one or two cases, heights were also determined, 
in addition, by levelling. The results obtained in regard to 
the principal peaks of the Highlands, by triangulation, are as 
follows: 
North Beacon, 1519 feet, (by levelling, 1518 feet.) 
South Beacon, 1502 fasts 
Butter Hill, 1363-5 feet. (Prof. Gillespie, in his Sees 
gives it as 1365 fect.) 
Black Rock, 1344 feet. 
Passing west from the Highlands, Dr. Doughty determined 
the height of Skunnemunk Mountain, as 1656 feet ; the dis- 
tance of this ridge from his river stations is about 45,000 feet. 
The extreme height of Polopel’s Island was approximately 
determined to be 112 feet. 
It may therefore be safely assumed that the elevations of 
these points are now accurately known. 
