70 
ROCK FLOOR OF GREATER NEW YORK. 
[BULL. 2 
Summary of records of borings made in New York and vicinity — Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
Serial 
num- 
ber. 
Location. 
Depth of boring to rock. 
As given. 
Referred 
to U. S. 
datum, 
Sandy 
Hook. 
Kind of rock, if kno 1 
991 
992 
993 
994 
995 
996 
997 
998 
999 
1000 
1001 
Miscellaneous— On or near Fifth avenue— 
Continued. 
Between Fifth and Sixth ave- 
nues — 
North line of 19th street , 
South line of 19th street. 
20th street, north of 991... 
Piatt street, southeast corner 
Williams. 
Broadway, southeast corner 13th 
street. 
Fifth avenue, southeast corner 
18th street. 
East side, 200 feet north of cor- 
ner of 20th street. 
Northwest corner 14th street. . . 
East side, about 50 feet north 
of 16th street. 
Southeast corner 17th street . 
Southwest corner 18th street. 
II 
17 
is 
} 
26 
14 
} 8 
22 
28 
21 
2:; 
( incisH. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
Do. 
