IBS.] 
EAST RIVER FRONT. 
31 
Summary of records of borings made in New York- and vicinity — Continued. 
1. BORINGS BENEATH CHANNELS ON WATER FRONT— Continued. ' 
Location. 
Depth of boring to rock. 
As given. 
EAST RIVER FRONT — Continued. 
At bulkhead line ( 'r-inch borings).a 
Pier— 
1 , Battery 
2, Whitehall street 
3, Coenties slip 
9, between Coenties and Old 
slips. 
12, Old slip 
15, Wall street 
18, Maiden lane 
19, Fletcher street 
21, Burling slip 
24, near Peck slip 
28, near Roosevelt street 
Brooklyn Bridge 
33 and 34 ( between) , near Cath- 
erine slip. 
37, Market slip . . _ 
41, Pike slip 
43 (old), Rutgers slip 
46 (old), Jefferson street .. 
49 (old), near Clinton street... 
52 (old), Gouverneur slip 
Miscellaneous.** 
North line of 80th street— 
7 feet east of bulkhead line 
32 feet west of bulkhead line 
Half block south of 81st street — 
23 feet east of bulkhead line . . . 
18 feet west of bulkhead line. . . 
South line of 81st street — 
48 feet east of bulkhead line . . . 
7 feet west of bulkhead line 
«New York department of docks; 4-inch borings 
iches in length. 
''New York department of docks. Records 45-49 
yen, Nos. 22, 18, 13, II, and 4 of such series. 
23.99 
18.77 
20.94 
29. 93 
30. 95 
53.23 
159. 89 
-142. 7 
135. 91 
L46.62 
■ 98.06 
■ 75 
108.79 
■ 85.28 
90. 99 
109.43 
- 51 
- 30.86 
66.56 
24 
10 
L0 
Referred 
to U.S. 
dat iiiii, 
Sandy 
Hook. 
33 
56 
162 
-145 
138 
-149 
-100 
- 73 
-111 
88 
- 93 
112 
53 
33 
69 
26 
- 12 
- 17 
- 15 
- 12 
Kind of rock, if knowi 
26 Granite. 
Do. 
23 Syenitic granite. 
32 Do. 
Do. 
Granite. 
Do. 
( rneiss. 
Granite. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
No. 31, top micaceous gneiss; core 10 feet 6^ 
from a scries of 32 borings, being, in the order 
