188 NEW YORK STATE MUSEUM 



Catshill^ Greene Co. Alexander McLean's yard is situated on 

 Water St. east of the wagon bridge. He has 12 acres of clay 

 land. The clay is mostly blue with yellow and red on top, and 

 is about 90 feet thick. 



A partial analysis of the blue clay is as follows : 



Silica. ' , 50 . 60 



Alumina 21 . 00 



Peroxide of iron 7.35 



Lime 3.75 



Magnesia 96 



The upper portion of the clay bank is a tough material and has 

 to be worked with a pick. A gray black sand of the same struc- 

 ture and appearance as that at Coeymans underlies the clay. 

 At this locality it contains too much lime, however, to use it for 

 tempering. Mr. McLean has to bring his tempering sand from 

 Jones' Point at the cost of 40 cents a cubic yard. The manufac- 

 ture of drain tile, hollow brick and sewer pipe has been attempted 

 with this clay, but was given up it is said for financial reasons. 

 Ferier & Golden's yard is situated on the opposite side of the 

 street from McLean's, and their clay bank is practically a con- 

 tinuation of his. Their tempering sand is carted from near the 

 West Shore Railroad station, a distance of about three quarters of 

 a mile. The bricks are burnt with wood, though petroleum was 

 used for a while successfully, it is claimed. The bricks are run 

 down to the dock on cars. Lying along the creek north of the 

 bridge is the Derbyshire Brick Co.'S yard. Most of the drying is 

 done under sheds. The clay is both blue and yellow and is dug 

 in a rather steep face causing it to slide often. The blue has 

 been excavated to 38 feet from tide level, and its upper limit is 

 82 feet above tide ; over this is 12 feet of yellow clay and three 

 feet of loam. The tempering sand is obtained about half a mile 

 from the works As at the preceding yard the bricks are loaded 

 on cars at the kiln and run down to the dock. 



Hudson, Columbia Co. There are three yards at this town. 

 J. Fitzgerald's Sons' yard is situated in a reentrant curve of the 

 shore, and about 300 yards east of it is the yard of Arkison Bros. 

 The former is no longer in operation. Both these firms obtain 

 their clay from different faces of the same hill. The clay, which 



