700 NEW YORK STATE MUSEUM 



Brigham Bros.' yard the clay is yellow, being weathered througli 

 to its base. It has a thickness of 10 feet and rests on an uneven 

 ridge of shale. On account of its toughness it is worked by under- 

 mining, as is the case with other yards along here where clay is 

 being dug. C. A. Schultz has an exposure of clay 80 feet thick, 

 overlain in spots by sand that can be used for tempering, l^ext 

 on the south is A. S. Staples's yard. The bank has been excavated 

 to a lower level than the preceding one. The clay is underlain by 

 hardpan. R. Maine & Co. have five acres of clay land. The ter- 

 race here is quite narrow. At Terry Bros.' yard the clay, which 

 is mostly blue, has been excavated sufficiently to expose the lime- 

 stone against which the terrace lies. At Hutton's yard the blue 

 clay is exposed from 8 feet above mean tide, to 110 feet above 

 it; overlying this is 10 feet of yellow clay and then 15 feet of sand. 

 It will be seen from the limits quoted above and in the table, that 

 the thickness of the clay between Glasco and Bondout varies con- 

 siderably, amounting to 120 feet in places, while in others it is 

 not over 15 or 20 feet. This is due to the great irregularity of the 

 underlying rock surface. 



Smiths Dock, Ulster co. The only yard here is that of Theo- 

 dore BroiTsseau. He has about 90 acres of clay land. The clay, 

 which is mined with plow and scrapers, is obtained from the terrace 

 east of the yard. It is mostly blue and covered by a few feet of 

 loam. The yard lies some YOO feet from the river and the bricks 

 are carted down to the dock. Brousseau's property extends west 

 to the West Shore railroad, and the farms north and south of him 

 are underlain by clay. 



Maiden, Ulster co. The clay at Cooney & Farrell's yard to 

 the north of the village is mostly yellow, and lies 10 to 20 feet 

 thick on the upturned edges of the Hudson river shales. This 

 yard was started in 1891. 



Glasco, Ulster co. Washburn Bros. This firm is one of the 

 largest producers along the river, having a yearly capacity of 

 50,000,000. They have about 150 acres of land, a large part of 



