132 ARTESIAN WELLS ON THE ATLANTIC COAST. [bull. 138. 
The 101-foot well flowed about 300 gallons a minute, but carried 
much fine sand. The following condensed record is given : 
Feet. 
1-65 sand and gravel. 
65-86 sticky blue clay. 
86-101 fine, water-bearing sand. 
Cambridge, Dorchester County. — This place is on Choptank River, 
about 40 miles north-northeast of Orisiield. There are six flowing 
wells reaching a depth of 36G feet and furnishing a large supply of 
water of excellent quality. The water occurs in sands underlying 100 
feet of the diatomaceous clays of the Chesapeake formation, and prob- 
ably near or at the base of this formation. Rock strata are reported 
from 75-82 and from 342-344 feet, and one 22 inches thick occurs at 
366 feet, just above the water-bearing sand. Sixteen feet of sands 
above this 22-inch rock stratum are reported to also contain a water 
supply. At Le Compt's store, 6 miles west of Cambridge, water is 
obtained from the Cambridge horizon at a depth of 358 feet. 
Federalsburg, Caroline County. — This place is 20 miles northeast of 
Cambridge, in the central- southern portion of the Eastern shore and 
only 14 feet above tide level. The well is 234 feet deep and the water 
rises to 30 feet above tide level. From an outlet at 15 feet above tide 
it flows 600' gallons an hour. The water-bearing stratum is a loose sand, 
containing glauconitic grains, and overlain by clays. I have not been 
able to obtain the record. The horizon is well within the Chesapeake 
formation and is probably the same as that at Lewes and Milford, Del. 
Denton, Caroline County. — This place is 15 miles north-northwest of 
Federalsburg and near tide level. The well is 358 feet deep, through 
green clay containing shells. The water is of excellent quality and in 
fair supply. Judging from the statement of the driller, the well is in 
green clay all the way down to water, and if this is the case the water 
horizon is probably at the base of the Chesapeake formation, or the 
same as that at Cambridge and vicinity and in St. Mary and Calvert 
counties. This would indicate an inclination of the beds of 15 feet per 
mile in this region. 
Claiborne, Talbot County. — This well is on the bay shore, on the west- 
ern side of the peninsula, nearly opposite Annapolis. The depth is 
440 feet, and the water is good and in considerable quantity. The bor- 
ing is in clay, with black sand grains, from 120 to 380 feet, then " coral 
rock" for 40 feet, with plenty of strongly alkaline water (16 grains to 
the gallon) ; then 10 feet of sand and a crust of sand rock, under which 
the water occurs. The horizon is probably in the M ago thy formation, 
as at Crisfield. I have not seen the borings. The three wells to 100 
feet appear to be in the upper beds of the Pamunkey formation, but 
may obtain their irony water from the basal Chesapeake beds. 
Ocean City, Worcester County. — This is a resort on the Atlantic coast 
of Maryland a few miles south of the Delaware line. Its well, 256 feet 
deep, passes through green clays to a sand which yields 130 gallons 
