184: 



NEW YORK STATE MUSEUM 



C. G. Griggs & Co.'s brick yard is located along the river about 

 one half mile north of Low Point station. An opening has been 

 made for clay about 800 feet east of the yard ; the clay as 

 exposed at present is 20 feet thick and overlain by two feet of 

 loam. One hundred feet farther east, and at a slightly higher 

 level, sand for tempering has been dug to a depth of eight 

 feet without finding clay. The clay is hauled in carts to the 

 yard. 



Roseton, Orange Co. There is a remnant of a terrace at 

 this locality 120 feet high. From this J. J. Jova and Rose & Co. 

 obtain their clay. The former has 80 acres, the latter 40. The 

 clay is mostly blue and rises to a height of 100 feet above the 

 river. At Jova's upper yard it is underlain by limestone and 

 overlain by sand. On top of the clay at his lower yard are 10 to 

 15 feet of sand and gravel. 



A well was sunk from river level at Jova's and passed through 

 the following : 



Blue clay 80 feet. 



Quicksand 25 " 



Loose sand and gravel ' 75 " 



1 80 feet. 



Adding to the above section 100 feet of clay above river level 

 gives us a total thickness of 180 feet of clay. At Rose & Co.'s 

 yard, which adjoins Jova's on the south, a well was sunk 135 

 feet through blue clay, it is claimed. Adding to this 108 feet of 

 clay above mean tide gives us a bed of clay 213 feet thick. The 

 terrace which the clay underlies at Roseton extends back from 

 the river several hundred feet into a reentrant angle of the hill. 

 The clay contains little sand and is worked in benches. Carts 

 are used to haul the clay. South of Roseton station is a bank of 

 sand of alternating yellow and grayish black layers, which has 

 been used for tempering, but is said not to give as good results as 

 that on Jover's premises. 



Port Ewen, Ulster Co. S. D. CoykendalFs yard lies near 

 the junction of Rondout Creek and Hudson River. The bank is 



