478 CLAYS AND CLAY INDUSTRY. 



Sample B took 25 per cent, of water in tempering, and had an 

 air shrinkage of 6.3 per cent. Its tensile strength varied from 122 

 to 150 pounds per square inch. When burned at' cone 05 the fire 

 shrinkage was 1 per cent., and the absorption 18.69 P er cent. ; at 

 cone 1 they were 3 per cent, and 12.27 per cent, respectively, and 

 at cone 5 they were 3.7 per cent, and 9.1 per cent. The bricklet 

 became steel-hard at cone 1, and at cone 9 the fire shrinkage was 

 6.6 per cent, and the color a deep red. 



Sample C burned deep red. 



Southard. — At Southard, 2 J / 2 miles north of Lakewood, clay 

 has been dug for common brick. The bed is from 2 to 6 feet in 

 thickness, and is reported to> be somewhat refractory, but no- tests- 

 have been made, and it is extremely questionable whether it is a 

 fire clay. 



Clay-working Industry. 



The total value of the clay products of Monmouth county 

 would, if tabulated, compare favorably, no^ doubt, with those pro- 

 duced by many other counties in the State, but the industry, as in 

 Burlington county, is rather concentrated. Great quantities of 

 common, soft-mud, as well as some stiff-mud, brick are produced 

 annually around Matawan, Cliffwood and Keyport. Others are 

 also manufactured west of Asbury Park, north of Farmingdale, 

 and along the N. J. Southern R. R., north of Shark River station. 

 Fireproofing is manufactured to a considerable extent at the 

 works of the National Fireproofing Company, at Lorillard. 

 White floor tile is made at Matawan and Keyport, but the ma- 

 terials used come in a large part from other -States, and to a small 

 extent from, the Amboy district. The county contains one pottery 

 works at Matawan, where stoneware and common red earthen- 

 ware are manufactured. The former is made chiefly from clays 

 of the Amboy district, and the latter from weathered beds of Clay 

 Marl II. Draintile is made at this factory, and also at some of the 

 brickyards north of Farmingdale. 



