LIME AND CEMENT INDUSTRIES 801 



1 Encrinal limestone containing numerous crinoid stems. 

 Light gray in color but often spotted with red. 



Samples for analyses were taken by the writer from a quarry 

 by a limekiln, 1-J miles east of Lockport and along the canal. 

 The rock in this excavation is a light gray, fine grained, massive 

 limestone containing numerous fossils, which often occur in large 

 aggregates. The upper layers of the quarry are thinner and more 

 argillaceous than the lower ones. 



The composition of the Niagara limestone in this quarry is 

 shown by the following analysis made by D. H. Kewland. 



Silica 7.09 



Alumina , 2 . 57 



Ferric oxid .96 



Lime carbonate . . . 56 . 19 



Magnesium carbonate . ., 33 . 42 



100.23 



South of the town of Niagara Falls the Niagara limestone is 

 quarried for burning into lime. The quarry is owned and oper- 

 ated by William Messing. The following is an analysis of his 

 stone made by the writer. 



Lime . ... 32.21 



Magnesia , 17 . 45 



Alumina 1.3 



Ferric oxid . . .75 



Silica 1.7 



Carbon dioxid . . 46.79 



100.2 

 Oneida county 1 



The Helderberg limestones extend across the southern part 

 of the county and are crossed by both the Utica, Binghamton 



l Prosser, C. S. & Cumings, E. R. Sections and thickness of the Lower 

 Silurian formations on West Canada creek and in the Mohawk valley. 

 (see 15th an. rep't N. Y. state geol. p. 23) 



White, T. G. Report on relations of the Ordovician and Eo-Silurian rocks 

 in portions of Herkimer, Oneida, and Lewis counties, (see 51st an. rep't N. Y. 

 state mus. 1; r21) 



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



