80 
ROCK FLOOR OF GREATER NEW 
YORK. 
[BULL. 270 
Summary of records of borings made in New York and 
vicin ity — Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
Location. 
Depth of boring to rock. 
Kind of rock, if 
known. 
Serial 
num- 
ber. 
As given. 
Referred 
to U. S. 
datum, 
Sandv 
Hook. 
Miscellaneous — Records not classified — 
Continued. 
1190 
6 feet south of 40th street and 
about 212 feet east of First 
avenue. 
0.69 
- 2 
1191 
6 feet north of 39th street and 
206 feet east of First avenue. 
31 feet east of First avenue — 
1.42 
1 
1192 
6 feet north of 39th street 
16.35 
13 
1193 
6 feet south of 40th street 
- 19.14 
16 
1194 
Grand Union Hotel, 42d street 
50 
"Micaceoo 
gneiss." 
and Park avenue, near curb of 
well o 
1195 
Waldorf-Astoria Hotel, 35th street 
and Fifth avenue, near curb of 
well." 
62 
50th street near Tenth avenue 6 — 
1196 
Columbia College, at curb 
40 
' ' Gray gnei 
and mica." 

1197 
Cushman's bakery, at curb 
40 
Do. 
1198 
Block 95th to 96th streets, east of 
First avenue. c 
-125 
-113 
1199 
Riverside drive viaduct, 96th 
street. d 
- 90 to -100 
- 72 
No rock. 
1200 
New York tower, Brooklyn bridge e 
- 75 
- 73 
1201 
Liberty and Nassau streets/ 
- 90 
- 60 
1202 
128th street and Tenth avenue . . 
-135 
-104 
1203 
129 East 61st street h 
- 14.5 
- 15 
35 
53 
Do. 
Rock. 
1204 
Fifth avenue between 73d and 
74th streets. h 
1205 
Fifth avenue and 116th street *. . . 
- 6 
15 
Gneiss. 
1206 
Park avenue and 130th street *. . . 
5 
11 
Do. 
1207 
Fulton Market, corner South and 
Fulton streets. J 
-130 
-126 
Rock. 
P. H. and J., artesian wells, Ann. Rept. State Geol. New Jersey, 1901, p. 120. Depth 
De 
)epth of (1195) well, 650 feet. " Rock as elsewh I 
aConlan 
(1194) well 420 feet. Rock as elsewhere, gneiss 
on Manhattan Island." 
?> Idem., 1896, p. 185. 
clnterurban Street Railway Company. 
dBoller, Alf. P. 
e Report chief engineer, Brooklyn Bridge. 
/Darton, N. H., U. S. Geol. Survev. 
firStotthoff Bros., Flemintrtnii, \. J. Surface datum. 
fcBunn & Nase. architects 1123 Broadway. 
i Hickey. J.. 83. 110th street. 
iNos. 1207-1225, Graether, L. F., Atlas of building laws of United States, vol. 1, 1898, pi. 2 
