lijme and cement industries 783 



2 Same as 1 with carbonates calculated. 



3 An analysis of Cliazy limestone quoted from Boynton/ and 

 said to be from Willsboro. 



SiOa , 



1 

 2.43 



CaO 



fi1 





AI2O3, ¥e,0, 



41 



MM . . 



1 



to v^.» ••.... ^ 



Na^O : 



K,0 





CI , 





H2SO4. . 





H3P0, 



• •••••••••• •••• 



Organic matter. 



2 



3 



2.43 



21.39 



• • • • • 



91.1 



70.31 



.41 



3.61 



2.1 



1.09 





tr. 





.8 





.31 





.69 





.2 





1.4 



54.84 96.04 99.8 



Fulton county^ 



Tlie Calcif erous and Trenton limestones form a crescent shaped 

 belt extending from Crum creek, northwest of St Johnsville, 

 through Garoga, Johnstown, Gloversville and Mayfield up to 

 ITorthville. A second belt extends from Xorthville to the south- 

 ern boundary and has a width of about 6 miles. 



Quarries are in operation at Cranberry creek and Mayfield. 



Genesee county^ 



A very small triangular area of E^iagara limestone occurs in 

 the northeastern corner of the county and a second very thin 

 strip along the northern edge. 



The Helderberg, on the contrary, extends through the central 

 part of Genesee county, passing through Batavia, Stafford, East 



1 Trans. N". Y. state agTic. soc. 1852. 12: 801. 



2 Darton, N. H. Geology of the Mohawk valley in Herkimer, Fulton, Mont- 

 gomery and Saratoga counties, {see 47th an. rep't N. Y. state mus. p. 601) 



Preliminary description of the faulted region of Herkimer, Fulton, 



Montgomery and Saratoga counties, {see 14th an. rep't N. Y. state geol. p. 33) 

 Vanuxern, Lardner. Geol. 3d dist. N. Y. 1842. 



3 Hall, James, {see Geol. 4th dist. N. Y. p. 464) 



