204 NEW YORK STATE MUSEUM 



clay is reddish in color, four to five feet thick and underlain by 

 hardpan. Lime pebbles occur in the lower portions. Molding 

 sand is obtained from a neighboring esker. 

 The following is an analysis of this clay : 



Silica 50.55 



Alumina. 15 .46 



Peroxide of iron , 4.38 



Lime 10.95 



Magnesia 3.35 



Alkalies 6.30 



90.99 



Maple-wood, Monroe Co. Robert Gay's yard lies along the N. 

 Y. C. E. R. His clay is very similar to the preceding, but some- 

 what lighter colored. It is underlain by quicksand. This clay 

 is used at Rochester to mix with Jersey fire clay in the manufac- 

 ture of sewer pipe. 



Clarlcson, Monroe Co. M. Parker's brick plant is on northern 

 side of the ridge road, at Clarkson, one mile north of Brockport. 

 The clay is a shallow loamy deposit, and is owned by J. Sigler. 

 The yard is an open one and both brick and drain tile are made. 

 The molding sand is obtained from near the depot at Brockport. 

 Product consumed locally. 



Albion, Orleans Co. There is a small yard about a mile north 

 of the town but nothing is known concerning it. 



Lockjport. The Lockport Brick Co.'s yard is at the northeast 

 end of the town. The upper portion of the clay is being used. 

 It is red in color, due to weathering. The clay is molded as 

 taken from bank, the bricks are dried on pallets and burnt in 

 scove kilns. Product used locally. 



La Salle, Niagara Co. Tompkins & Smith run a small yard 

 at this locality. Clay is very similar to that at Tonawanda. It 

 is underlain by hardpan. Rolls are used to crush the lime 

 pebbles in the clay before molding it. The product is marketed 

 in the vicinity. 



Tonawanda, Niagara Co. To the southeast of the town is the 

 brick plant of Martin Riesterer. The clay is of a red color pass- 



