178 CLAYS AND CLAY INDUSTRY. 



A Boring at J. H. Manning's Clay Bank. 



a. Black sandy clay, 2 ft. 



b. Fire sand, 10 " 



c. Buff-colored clay, 4 " 



d. Fire sand, 4 " 



e. "Feldspar," 10 " 



30 " 



In still another boring 1 in a pit east of McHose Brothers' bank, 

 and formerly worked by E. F. Roberts, these beds were found 

 beneath the fire clay. 



A Boring at E. F. Roberts' Clay Bank. 



a. White sand and kaolin, 10 ft. 



b. "Feldspar," 3-4 " 



c. White sand, 



d. Black clay at the bottom, 



The black clay at the bottom is believed to be the top of the 

 Woodbridge clays, 



These three borings were in the area north of the Raritan river. 

 Within the same region intermediate portions of this division are 

 now exposed at the "feldspar" banks of E. W. Valentine & Bros. 

 (40), Henry Maurer & Son (41), The Staten Island Clay Com- 

 pany (32), Remy & Son (242). Valentine's and Maurer's banks 

 are close together, and by combining the sections there exposed 

 the following sequence of strata can be made out : 



Combined Sections at Valentine's and Maurer's Feldspar Banks. 



a. Cross-bedded sands with thin clay lenses, 8 ft. 



b. Quartz sand with thin clay laminae, 13-8 " 



c. "Feldspar," varying greatly in thickness, average, .... 4-9 " 



d. Black micaceous sand, 8 " 



Total, 33 " 



e. Black clay, reported to be 35 feet thick. 



The underlying black clay (e), seen at the eastern end of 

 Maurer's bank belongs to the Woodbridge beds ; the other strata 

 are included in the "feldspar-kaolin" sands. 



1 Idem, p. 134. 



