LINE OF SUBWAY. 
47 
Summary of records of borings made in New York and vicinity— Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
401 
402 
403 
404 
405 
406 
407 
408 
409 
410 
411 
412 
413 
414 
415 
416 
417 
418 
419 
420 
421 
422 
423 
| 424 
425 
426 
427 
428 
429 
430 
431 
432 
433 
434 
435 
436 
Location. 
Line of subway, on Lexington avenue— Con 
67th street 
68th street 
69th street 
70th street 
71st street 
72d street 
73d street 
74th street 
75th street 
76th street 
77th street 
78th street 
79th street 
80th street 
81st street 
82d street 
83d street 
84th street 
85th street 
86th street 
87th street 
88th street 
89th street 
90th street 
91st street 
92d street 
93d street 
94th street 
95th street 
96th street 
97th street 
98th street 
99th street 
100th street 
101st street 
102d street 
Depth of boring to rock. 
As given. 
Referred 
to U. S. 
datum, 
Sandy 
Hook. 
- 4 
69 
— 9 
72 
-10 
73 
-21 
60 
21) 
58 
-11 
55 
-13 
50 
-29 
25 
-22 
31 
-32 
23 
-16 
42 
-18 
41 
- 4 
57 
- 4 
67 
- 3 
76 
- 2 
82 
- 9 
SO 
- 9 
77 
- 8 
78 
4 
83 
10 
76 
L2 
76 
25 
63 
12 
76 
-18 
69 
- 3 
90 
- 9 
83 
— 7 
80 
- 6 
73 
-10 
54 
- 9 
45 
- 9 
49 
- 3 
57 
-10 
52 
- 3 
49 
- 8 
37 
Kind of rock, if known. 
Rock. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
I )o. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
