^732 NEW YORK STATE MUSEUM 



Florida, Orange co. W. H. Vernon's brick j'-ard and clay de- 

 posit are situated in tlie valley near the town. Tlie clay bed is 10 

 feet thick, blue in color and tough. The upper 3 feet is weathered to 

 a red clay, which makes a better brick. The blue is of sufficient 

 purity for making pottery. Underneath the clay is sand and hard- 

 pan. 



Oakland valley, Sullivan co. A small deposit of clay at this 

 locality was used for some time for making earthenware. 



About one eighth sand had to be added to the clay for brick or 

 tile ware. The sand, which is of a bright yellow color, is in banks 

 along the ISTavesink river, near the clay beds. This clay is also 

 said to be available for paint. Oakland valley is about 12 miles 

 from Port Jervis. 



A^ew Paltz, Ulster co. IsTew Paltz brick co. The brick yard is 

 located on the outskirts of the town and near the Wallkill Valley 

 railroad, with which it is connected by a switch. The clay deposit 

 is yellow, red and blue in color, and varies in depth from 15 to 

 50 feet. It underlies a tract of 6 acres. The natural separation 

 of the clay in 4 to 8 inch layers facilitates the digging of it. There 

 is a thin stratum of overlying sand which has to be first stripped. 

 Soft mud machines operated by horse power are used for molding. 



Warwick, Orange co. Though there are no brickyards in this 

 vicinity, extensive deposits of clay are undoubtedly present. A 

 sample of clay from the Drowned lands, lying along the Wallkill 

 river iii Orange co., was analyzed in the laboratory of the ISTew 

 Jersey geological survey with the following results : 



Silicic acid in combination 28.9 



Quartz 22 . 9 



Silicic acid free 1.2 



Titanic acid 1.5 



Oxid of alumina 23.1 



Peroxid of iron 7.2 



Lime .7 



