64 
ARTESIAN WELLS ON THE ATLANTIC COAST. 
[BULL. 138. 
Feet. 
180-188 black mud, white and black sand, mica, and vermilion sand. 
188-200 fine and coarse white and black sand and mica. 
200-225 fine white and black sand and very coarse white quartz. 
225-244 coarse sands and fine gravel. 
244-245 gray clay, tough. 
245-252 coarse sand and fine gravel ; water, 2 gallons per minute. 
252-260 gray clayey marl, medium gravel and quartz, and rotten stone. 
260-270 brownish-gray clay and bits of rotten wood. 
270-280 fine and coarse sands, some like opals; bits of wood. 
280-290 hard sandy brown clay. 
290-293 hard muddy brown clay. 
293-320 coarse and fine white and gray sand and some mica. 
The small flows of water at 157 and 175 feet appear to represent the 
horizons of 525-550 feet at Atlantic City, on the calculation of the dip 
at 25 feet per mile. The small flow at 252 feet probably represents 
some water-bearing sands in the lower part of the same clay bed, a 
horizon not reported at Atlantic City, but noticed at Ocean City, and 
believed to be stratigraphically the same as that supplying the wells at 
Pleasant Mills. The horizon at 300-320 feet is equivalent to that at the 
depth of 700 feet at Atlantic City, being the first water bearing sands 
fairly below and out of the diatom clay bed. On pumping this well for 
an hour it supplied 100 gallons without perceptible lowering of the 
water level. The water will rise 9 feet above the level of the bay. 
Two analyses of the water have been made at a year's interval. Both 
are said to be fairly accordant as to the relative amounts of the ingre- 
dients, but the total amount of mineral matter increased from 4.633 
grains per gallon to 8.094 grains. The later analysis was made by 
Dr. Henry Leffman, and is as follows : 
Analysis of water from well at Great Sedge Island, Xew Jersey. 
Calcium carbonate 
Silica 
Potassium sulphate 
Sodium sulphate 
Sodium chloride 
Sodium carbonate 
Magnesium 
Iron 
Total 
Xitrogen as nitrites 
Xitrogen as nitrates 
Xitrogen as ammonium 
Xitrogen as permanganates 
Grains per 
gallon. 
0.937 
1.624 
0.691 
0. 274 
0.46G 
0.266 
0.207 
0.168 
4.633 
Xone. 
Trace. 
0. 0005 
0. 0034 
Greenwich, Cumberland County. — Mr. Job Bacon bored a well 690 feet 
deep at tliis locality, but found no water. 
