Limestones. 107 



The vertical section of the quarries, as stated by Mr. Hewitt, is as 

 follows : 



1. Rough limestone ._ lto4 feet. 



2. Gray stone _ 6 inches. 



3. Gray limestone 12 inches. 



4. Shelly stone 16-20inches. 



5. Shelly stone (boring) 6 to 8 feet. 



6. Blue limestone at bottom. 



The top beds are used for lime making. The bed (2) is sold for 

 common building stone, sidewalks, etc. The next bed is the valuable 

 one of the quarry, and is cut into dimension stone, for platforms, 

 steps, sills, lintels and house trimmings. The M shelly stone," near 

 the bottom, is mixed calcareous and argillaceous layers, but is smooth 

 on bed surfaces and breaks time. It is used as a common building: 

 stone. The blue limestone at the bottom is the same bed which is 

 opened for a thickness of 14 to 18 feet in the old, or south quarry. 

 At the latter the beds are 1 to 3 feet thick. Under this blue lime- 

 stone there is the livery-looking, black to yellow stone, supposed to 

 be a cement-rock. It is 8 feet thick. The dip of the beds is undulating 

 in the quarry ; on the west of the road it is a few degrees west. The 

 joints are tight, and in places the stone is "seam-bound." Drainage 

 is natural. Two small derricks answer for loading and moving stone. 

 These quarries are in the Birdseye and Trenton limestone formations. 



A large amount of stone used in the foundation of the capitol at 

 Albany was obtained from Amsterdam, and from Shanahan's quarry. 

 Albany, Cohoes and Troy are chief markets outside of Amsterdam. 



For home use a great deal of stone is quarried here on the sites for 

 buildings and the excavations for cellars often yield stone enough 

 for the walls. 



Tribes Hill, Montgomery County. — Henry Hurst & Sons. 

 The eastern end of this quarry is less thaii 100 feet west of the Tribes 

 Hill station on the N. Y. C. R. R., and between the railroad and the 

 Mohawk river. Its working face looks south-east and trends in a 

 south-west course, nearly 50 rods. The vertical section in the eastern 

 part of the quarry includes the following members : 



1. Soil covering the rock. 



2. Blue, thin-bedded limestone _. 10 feet. 



3. Gray, crystalline limestone 6 J feet. 



4. Gray limestone mixed with blue limestone 7 feet. 



5. Blue limestone at bottom. 



