EAST RIVER SECTIONS. 
35 
Summary of records of borings made in New York and vicinity — Continued. 
1. BORINGS BENEATH CHANNELS ON WATER FRONT— Continued. 
Location. 
east river sections — continued. 
Pennsylvania Railroad tunnel, foot of 
Flushing street, etc.— Cont'd. 
1,500 feet east of New York bulk- 
head line (a). 
(6) 
1,400 feet east of New York bulk- 
head line (a). 
(b) - 
(c) 
1,000 feet east of New York bulk- 
head line (a). 
(6) 
800 feet east of New York bulk- 
head line. 
600 feet east of New York bulk- 
head line (a). 
Depth of boring to rock, 
As given. 
(b) 
560 feet east of New York bulk- 
head line. 
440 feet east of New York bulk- 
head line. 
320 feet east of New York bulk- 
head line. 
Pierhead line, between 32d and 
33d streets. 
New York-Brooklyn tunnel of rapid transit 
commission, a 
East of pier 4 (foot of Broad 
street) — 
3,210 feet east of pier end 
2, 145 feet east of pier end 
1,988 feet east of pier end 
1,558 feet east of pier end 
1,152 feet east of pier end 
857 feet east of pier end 
510 feet east of pier end 
End of pier 
Near end of pier 3 
Same as 331 (Battery series) . . . 
a Rapid transit commission 
103^ 
ll09 
115) 
591 
- 69 
- 94 
- 73 
- 46 
- 77 
- 97i 
-100 1 
- 74 
- 95 
-111 
-110 
79 
59 
99 
Referred 
to U. S. 
datum, 
Sandy 
Hook. 
-107 
57 
75 
97 
72 
93 
109 
L08 
Kind of rock, if known. 
63 No rock. 
- 63 Gneiss. 
9. 2 - 87 No rock, 
- 98 Do. 
- 67 Gneiss. 
2. 24 - 60 Do. 
- 52 Do. 
28 Do. 
!7.9 - 25 Do. 
- 16 Do. 
Datum mean high water. 
Rock or bowlder. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
