230 BULLETIN OF THE NEW YORK STATE MUSEUM 



pearance. The product is shipped to New York city for 

 foundation walls, and is used for common wall work in the 

 adjacent country. 



Yonkers, Westchester County. — The Valentine quarry 

 opened on the top of the hill, two miles south-east of Yonkers, 

 and on the Mount Vernon road, is worked at long intervals. 

 The stone is fine-grained, a mixture of feldspar, quartz, and 

 a little hornblende. 



Tarrytown, Westchester County — The old Beekman 

 quarry, one and a quarter miles north of the station, and at 

 the side of the railroad track was worked largely in former 

 years. 



Kensico, Westchester County. — A gneissic rock has been 

 quarried extensively on the east side of the Bronx river 

 reservoir, and used in the construction of the reservoir 

 dam. 



Union Valley, Putnam County. — The quarries of Jackson 

 & E. Ganung are located four miles from Croton Falls, and 

 in the town of Carmel. The stone has a striped appearance, 

 due to black mica and white feldspar, alternating in thin 

 layers. Its main use is for posts and foundations ; some of 

 it has been used for monuments and buildings. 



Ramapo, Rockland County. — The quarry of Henry L. 

 Pierson is in the hill-side near the N. Y., L. E. & W. R. R., 

 south of the village. The stone is a quartz-syenite, consist- 

 ing of orthoclase, quartz and hornblende. It is especially 

 suited for heavy masonry on account of its strength and the 

 large size of blocks which can be obtained. Some of this 

 stone has been used for monumental work, and some for 

 the Erie railway bridges. 



Suffern, Rockland County. — Granite for cemetery posts 

 and monumental bases has been quarried in a small way 

 from ledges on the road-side west of Suffern station. It 

 is greenish-gray in color, hard to cut and dress, but Is 

 durable. 



