376 NEW YORK STATE MUSEUM 



Hartsdale, Westchester County. — Gneissic rock is quarried 

 near Hartsdale station, on the Harlem railroad, for the local 

 market. The county buildings at White Plains are built of this 

 stone. 



Southeast of "White Plains gneiss is quarried, and an example 

 in construction is seen in the M. E. church on the main street. 



Scarsdale, Westchester County. — The Seely quarries are a 

 half mile west-northwest of the Scarsdale station, and near the 

 road to Greenville. The stone obtained from this locality con- 

 sists of feldspar, quartz, hornblende and a little black mica, and 

 these minerals in parallel lines give it a foliated aspect. The 

 exposed ledges near the quarry are firm and solid and show very 

 little alteration due to weathering. This stone has been used in 

 bridge work for the Bronx river aqueduct, and also in the 

 Williams Bridge reservoir gatehouse. 



Hastings, Westchester County. — There are three quarries in 

 the vicinity of Hastings. One is owned and worked by the 

 1$. Y. C. & H. R. R. R. Co., one mile south of the railroad 

 station. The Munson quarry* is three-quarters of a mile east- 

 southeast of the village, and adjoining it on the same ridge is 

 the Ferguson quarry. 



The stone of these quarries consists of orthoclase, quartz, horn- 

 blende and biotite, arranged generally in parallel lines or thin 

 layers, which give the rock a gray and striped appearance. 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 southeast of Yonkers, 

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

 The stone is fine grained, a mixture of reddish feldspar, quartz, 

 and a little hornblende. 



Tarry town, 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 reser- 

 voir, and used in the construction of the reservoir dam. 



* Operated by Wm, G. Lefurgy. 



