818 NEW YOEK STATE MUSEUM 



At Barnerville, between Howe Cave and Cobleskill, a very 

 large quarry has been opened in the same limestone, for build- 

 ing purposes (pi. 64, 65). The stone is said to yield on analysis: 



Lime 51.05 



Magnesia 1.65 



Silica 4.31 



Alumina and ferric oxid .97 



Sulfur .29 



Carbon dioxid 41 . 9 



100.17 

 Schuyler county ^ 



South of Alpine station on the Lehigh Valley railroad is a 

 large tamarack swam^p, whose surface is underlain by from 3-8 

 feet of muck. Below this is found a deposit of marl which varies 

 in thickness from 2-10 feet, being as much as the latter in many 

 spots. 



The property is owned by J. Hinman. 



Seneca county^ 



The Upper Helderberg formation covers a belt widening west- 

 ward, which extends from opposite Union Springs on Cayuga lake 

 westward toward Geneva on the south and Thornton Corners on 

 the north. It is quarried at both Seneca Falls and Waterloo, 

 the quarries being mostly in the Seneca beds, but partly in 

 Corniferous. At Seneca Falls the quarry is operated by Gr. J. 

 Fisher, and at Waterloo the quarry operators are D. Babcock, 

 Edson Bros., G. C. Thomas & Bros., B. Frank. The following 

 section is from Babcock's quarry (pi. 66). Beginning at the top 

 there is : 



Dark, fine grained limestone 0' 14" 



Cherty limestone 6' 0" 



Cherty limestone 2' 0" 



Shale. 0' 10" 



Two 17 inch layers, fine grained limestone, 2' 10" 



1 Hall, James. Geol. 4tli dist. N. Y. p. 449. 



Lincoln, D. F. Geology of Seneca county, {see 15tli an. rep't N. Y. state 

 geol. p. 57) 



