RIVERSIDE PARK EXTENSION. 
59 
Ktaitmart/ of records of borings made in New York and vicinity— Continued. 
2. BORINGS IN THE BOROUGH OP MANHATTAN— Continued. 
Serial 
num- 
ber. 
Location. 
Depth of bofifig to rock. 
Referred 
to U. S. 
Kind of rock, if known. 
As given. 
datum, 
Sandy 
Hook. 
' 
Along Fotirth avenue — Continued. 
667 
23d street 
—27 
8 
668 
24th street 
-30 

Do. 
669 
670 
25th street 
-20 
-17 
10 
16 
Do 
26th street 
Do. 
671 
27th street 
-15 
25 
Do. 
672 
673 
28th street 
-12 
-17 
24 
23 
Do 
29th street 
Do. 
674 
675 
676 
677 
678 
679 
30th street 
-25 
-30 
-15 
- 8 
- 5 

15 
8 
25 
35 
57 
70 
Do. 
31st street 
Do. 
32d street 
Do. 
33d street 
Do. 
34th street 
Do. 
35th street 
Do. 
Riverside Park extension, a 
Twelfth avenue — 
680 
Southwest corner 137th street. . 
-27 
-15 
Rock or bowlder 
! 681 
682 
: 683 
3 feet west of 680 
-31. 50 
-32 
41.50 
-19 
20 
29 
Do. 
100 feet north of 680 
Do. 
Southeast corner 138th street. . . 
Do. 
684 
Northeast corner 138th street. . 
44. 66 
:;i 
Do. 
685 
160 feet southeast of 684 
-38 
-26 
Do. 
686 
687 
100 feet east of 685 
27. 50 
-29 
-16 
-17 
Do. 
160 feet northeast of 684 
Do. 
688 
689 
! 690 
100 feet north of 687 
-33 
-27 
- 8 
-21 
—15 
4 
Do. 
100 feet north of 684 
Do. 
Northeast corner 139th street. . 
Do. 
691 
692 
693 
2 feet west of 690 
-10 
- 8.50 
-11 
3 
1 
Do. 
2 feet east of 690 
Do. 
100 feet north of 139th street. . . 
Do. 
694 
695 
696 
697 
698 
in 
3 feet we'st of 693 
-15 
-32 
-37.16 
-15 
-15 
ineer, 25 Broac 
- 3 
-20 
-26 
- 3 
- 3 
1 street; \vi 
Do. 
140th street 
Do. 
100 feet north of 695 
Do. 
141st street 
Do. 
3 feet north of 697 
Do. 
a Williamson, F. S., consulting eng 
ish borings. 
