DAETON.] 
VIRGINIA. 
List of deep wells in eastern Virginia — Continued. 
167 
Location. 
Depth. 
Size. 
Capacity per 
minute. 
Height 
to which 
water 
rises, a 
Horizon. 
Remarks. 
West Point, 200 wells. 
Feet. 
160 
250 
180-230 
876 
280 
430 
161 
In. 
Gallons. 
Average 12 
20 
1-6 
None. 
Many. 
None. 
Flows 2 
Feet. 
Average 
+ 2. 
Basal Chesapeake. . 
Basal Chesapeake ? 
Basal Chesapeake. . 
Potomac 
Basal Chesapeake. . 
Near to basal 
Chesapeake. 
Chesapeake 
White House, 3 wells. 
Williamsburg 
Do 
+ 5-20 
Windmill Point 
stratum. 
To top of rock 
stratum. 
Zuni 
a +, feet above the surface; — , feet below the surface. 
DESCRIPTIVE NOTES ON WELLS IN EASTERN VIRGINIA. 
For many of the wells I have been unable to obtain any further data 
than are given in the preceding table, but for others a greater or less 
amount of information has been furnished. 
Fort Monroe. — A well was started at this locality in 1845, but was 
abandoned at 168 feet. In 1864 another boring was started and a 
depth of 906 feet was attained. No water supply was obtained in these 
wells, but they both appear to have been badly managed, and the failure 
of the deeper one may be due to this cause. I believe, however, that it 
was not sufficiently deep and that the stratum in which water should 
be expected is at a somewhat greater depth. This is a very impor- 
tant consideration, and, as it rests mainly on the identification of the 
geologic horizon of the well borings, I shall discuss at some length the 
basis of my opinion. During the boring of the well samples of the bor- 
ings were sent to Prof. W. B. Eogers, formerly State geologist of 
Virginia, who prepared* the following descriptive list of the strata 
penetrated : 1 
Ft. In. 
151 fine yellowish-gray sand with fragments of shells. 
158 huff argillaceous marl. 
160 fragments of Turritella and Pecten in gray marl mostly; com- 
minuted shells. 
164 6 fragments of Turritella and Pecten in gray marl mostly; com- 
minuted shells. 
166 10 more sandy than last ; fragments of Area. 
168 10 more sandy than last, with Balauus, etc. 
170 10 gray sand, with Area, etc. 
192 greenish gray ; sandy; Turritella. 
194 lighter gray; sandy; Turritella. 
197 more clayey than 194 feet. 
1 This record is puhlished in The Virginias, Vol. Ill, pp. 151, 152, and in Geology of 
the Virginias, New York, 1884, pp. 731-736. 
