480 



NEW YORK STATE MUSEUM 



Trenton limestone, struck at 635 ft 500 ft 



Calciferous sandstone, struck at 1135 



Granite, struck at 1560 



Two veins of salt water, one at 1135 and a stronger one at 

 1175 feet, were discovered in the descent. The Potsdam sand- 

 stone began, according to the determination of the drillers at 

 1290 feet. 



A full set of samples of the drillings was kept by Dr W. S. 

 Kingsley, one of the principal stockholders of the Brass and 

 copper co. as well as of the Factory building co. Dr Kingsley 

 kindly allowed me the full use of these samples and the careful 

 examination of them gives warrant for the following section. 



Drift, 125 feet 



f Soil and clay 



Dark, fine grained clay . . 



Dark, gravelly clay ..... . 



<J Dark and coarse gravel . . 



Finer gravel 



Fragments of Utica shale 

 I Coarse gravel 



f Upper beds at 



16 ft 

 34 

 16 

 29 

 12 

 10 

 .8 



126 



Utica shale, 



500 feet 



Trenton lime- 

 stone, 435 feet 



Very dark shale 350-450 



Hard shale 550-630 



Calcareous shale at 658 



White flakes of lime, approaching 

 .Trenton limestone 



' Upper beds at ... 660 



Pepper and salt rock (gas found 



here) at 680 



Light blue limestone at' 715 



Light gray limestone 735-765 



Dark blue limestone, hard, at. . . . 855 

 ^ Limestone, alternately gray and 



blue ..... ' 875-925 



Limestone, alternately gray and 



black 925-1000 



Limestone, black and hard 1020-1025 



Limestone, softer 1025-1080 



Limestone, shaly 1080-1085 



