DARTON 
NEW JERSEY. 89 
Permanent hardness, equivalent to grains of calcium carbonate, 
1.394; temporary hardness, trace; organic matter, very small amount. 
The water is perfectly clear and odorless. 1 
A well was bored in 1893 on Crab Island of this group to a depth of 
535 feet. It is one-half mile southwest of the first well. It yields 60 
gallons per minute and the water rises 22 feet above tide level. The 
record is as follows : 
Feet. 
0-58 mud and large gravel. 
58-133 white and yellow sand. 
133-135 bard crust. 
135-172 dark bluish-green clay, hard. 
172-272 sand. 
272-380 marly clay and wood. 
380-392 coarse sand, small llow of water. 
392-510 lighter-colored, soft bluish clay. 
510-535 coarse sand and gravel with water from 510-535 feet. 
The water at 380 to 392 feet is thought to be the horizon at 525 feet at 
Atlantic City and at 425 feet at Beach Haven. The water at 510-535 
feet belongs to the 700 -foot stratum at Atlantic City, and 543-575 feet 
at Beach Haven. 2 
Sewell, Camden County. — The well here was bored for F. J. Anspach 
on Chew's Hill, east of the Mantua road. A good supply of water was 
obtained at 72 feet at the horizon in the Redbank underlying the Lower 
Marl bed. The water was found to be ferruginous and the well was 
deepened to 420 feet, where an abundant supply of pure, fresh, soft 
water was obtained. The bore is 3 inches and the yield is stated to be 
1,500 gallons per hour. The record is as follows: 
Feet. 
0-17 yellow gravel, yellowish sand, and yellow ochery sandy clay. 
17-24 green marl. 
24-30 very dark green marl. 
30-43 reddish-yellow sand rock with casts of shells. 
43-56 yellowish sand with greensand grains. 
56-72 yellowish sand, lighter in color, with greensand grains. 
72-104 water-bearing sand continued. 
104-284 tough, fine, blue clays and blue sandy clays. Exogyra at 180 
feet. Layer of sand at 264 feet. Very sandy clay with large 
pebbles at 276 feet. 
284-335 greenish sand with streaks of clay at base. 
335-342 fine, clean, gray sand. 
342-351 coarse sandy gravel, angular grains. Yielded a little water 
351-352 stiff white clay. 
352-375 fine gray sand with streaks of clay and considerable lignite. 
375-381 layers of white sand and white clay. 
381-395 white angular gravel, coarse and gritty. Great abundance of 
good water. 
395-405 white angular gravel, extra coarse. 
405-408 fine white sand. 
408-415 fine sand and coarse gravel, mixed. 
415-420 very coarse augular gravel with bowlders and cobbles. 3 
■New Jersey report for 1886, pp. 212-213. 
2 L. Woohnan, in New Jersey report for 1893, pp. 396-397. 
3 New Jersey report for 1891, pp. 230-231. 
