126 Report on Building Stone of New York. 



nearly rectangular in shape and about 300 feet by 100 feet and 26 

 feet deep. The earth covering on the stone varies from one to six 

 feet thick. The dip of the courses or strata is 5° southward. There 

 are two sets of joints or seams ; one south 17° east, and a second set 

 east and west. They are at convenient distances apart for working 

 out the blocks of stone, and are generally open. The vertical succes- 

 sion of beds or tiers of stone, from the top down is as follows : * 



1. Blue limestone _ 12 inches. 



2. Blue limestone _ 16 inches. 



3. Blue limestone for flagging ._ 3 inches. 



4. Blue limestone _ 14 inches. 



5. Blue limestone 22 inches. 



6. Blue limestone 4 inches. 



7. Blue limestone . _ 4 inches. 



8. Blue limestone 7 inches. 



9. Blue limestone 8 inches. 



10. Blue limestone _ 9 inches. 



11. Blue limestone ._ _ 11 inches. 



12. Blue limestone _ 20 inches. 



13. Blue limestone (flag-stone) 2 inches. 



14. Blue limestone ._ , 8 inches. 



15. Blue limestone __ 8 inches. 



16. Blue limestone ._ _ 16 inches. 



17. Clay 6 inches. 



18. Flint ._ 6 inches. 



19. Limestone 16 inches. 



20. Flag-stone ._ _ _ 5 inches. 



21. Limestone _ 27 inches. 



22. Limestone 12 inches. 



23. Limestone _. 7 inches. 



24. Limestone __ 16 inches. 



25. Limestone _ 18 inches. 



26. Limestone _ 22 inches. 



The bottom is shaly limestone, and under it there is a bed of lime- 

 stone three feet thick. The strata, or as they are here termed, " tiers,' 11 

 are worked up into building stone, canal lock stone, and railroad 

 briv'ge pier stone, flag-stone and platforms. The bedding faces at this 

 quarry are somewhat rough, and hence the stone is better adapted for 

 heavy work. The stone of the thick beds is gray, sub-crystalline, and 



* Prom Mr. Shaper. 



