>BBS.] 
RIVERSIDE PARK EXTENSION. 
63 
Summary of records of borings made in New York and vicinity — Continued 
2. BORINGS IN THP: BOROUGH OF MANHATTAN— Continued. 
Depth of boring to rock. 
Location 
Riverside Park extension— Continued. 
Twelfth avenue — Continued. 
19 feet north of 800 
Northeast corner 152d street. . . 
25 feet north of 802 
15 feet west of 803 
25 feet north of 802 
25 feet north of 805 
25 feet north of 806 
125 feet north of 802 
25 feet north of 808 
25 feet north of 809 
25 feet north of 810 
Southeast corner 153d street. . . 
Northeast corner 153d street... 
25 feet north of 813 
25 feet north of 814 
25 feet north of 815 
100 feet north of 813 
5 feet north of 817 
20 feet north of SIS 
25 feet north of 819 
25 feet north of 820 
25 feet north of 821 
4 feet west of 822 
125 feet north of 817 
25 feet north of 824 
25 feet north of 825 
3 feet west of 826 
25 feet north of 827 
25 feet north of 828 
25 feet north of 829 
5 feet north of 830 
25 feet north of 831 
25 feet north of 832 
25 feet north of 833 .......... . 
As given. 
8.16 
10. 33 
10. 66 
7.50 
9.16 
7. 66 
8.50 
7.66 
- 8 
7.16 
s. 33 
14. 16 
•22. 50 
- 7 
19. 10 
-20 
12.66 
17.50 
17 
-21 
•16. 50 
-11. 16 
-20. 66 
21. 50 
23 
9.16 
22. 50 
22. 16 
21. 50 
12 
19 
-17. 50 
16 
-16. 50 
Referred 
to U.S. 
datum, 
Sandy 
Hook. 
Kind of rock, if known. 
Roc 
k or bowlder. 
Do. 
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