48 
ROCK FLOOR OF GREATER NEW YORK. 
[BULL. 270. 
Summary of records of borings made in New York and vicinity — Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
Serial 
Dum- 
ber. 
Location. 
437 
43S 
439 
440 
HI 
442 
443 
444 
445 
446 
447 
148 
44U 
Lint of subway, on Lexington avenue— Can, 
103(1 street 
104th street 
L05th street 
100th street 
L07th strot-t 
losth street 
109th street 
I 10th street 
111th street 
I L2th street 
113th street 
114th street 
I I 5th street 
Depth of boring to rock. 
As given. 
458 
459 
460 
461 
462 
I. in> of subway, mi tioth strut." 
450 About 270 feet east of Lexington 
avenue. 
-151 About 00 feet west of Park avenue 
-152 About 231) feet east of I 'ark avenue 
About 30 feet east of Madison 
avenue. 
About 160 feet west of Fifth 
avenue. 
155 About lso feet east of Fifth avenue. 
About510feeteast of Fifthavenue. 
About 00 feet west of Lenox 
avenue. 
I. hit of subway, on SUh street.** 
West side of First avenue 
About 325 feet east of Second 
avenue. 
About 275 feet east of Second 
avenue. 
About 50 feet east of Second 
avenue. 
About halfway between Second 
and Third avenues. 
4 
42 
-51 
02 
Referred 
to U.S. 
datum, 
Sandy 
Hook. 
-15 
-41 
-17 
25 
-52 
02 
I '.i 
-70 
-27 
- 4 
-22 
-28 
24 
-12 
14 
3 
43 
17 
Kind of rock, if known. 
13 
Rock. 
-30 
Do. 
-37 
Do. 
44 
Do. 
-30 
No rock 
-38 
Do. 
35 
Do. 
-15 
Do. 
-27 
Rock. 
-25 
No rock 
-30 
Do. 
-18 
Rock. 
Do. 
Do. 
39 
Do. 
48 
Do. 
31 
Xo rock 
Do. 
Rock. 
No rock. 
Do. 
-18 
Rock. 
10 
Do. 
— 7 
Do. 
-11 
Do. 
1 
Do. 
a Rice, Geo. S., acting chief engineer, rapid transit commission. Wash borings; nature of rod 
determined. 
