FOUNDATIONS OF TALL KUILDINGS. 
51 
Summary of records of borings made in New York and uicmity— Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
Location. 
Depth 
)f boring to rock. 
Serial 
num- 
ber. 
As given. 
Referred 
to U. S. 
datum, 
Sandy 
Hook. 
Kind of rock, if known. 
Profile along Broadway— Barclay 
street to 33d street — Continued. 
• 
526 
31st street 
33 
Rock or bowlder. 
527 
32d street 
37 
41 
Do. 
528 
33d street 
-40 
Do. 
Foundations of tall buildings. 
529 
New custom-house, Battery 
place. a 
-32 to 
-40 
Gneiss. 
530 
Battery place building, be- 
tween West and Washing- 
ton streets. b 
<:3 
-43 
-41 
Do. 
531 
Hallenbeck building, Park 
and Pearl streets. c 
-40 
-25 
Rock not sounded. 
532 
Corn Exchange (addition), 
Beaver and Williams 
streets. d 
-35 
-19 
Rock, presumably 
gneiss. 
533 
Blair building, Broad street 
and Exchange place. e 
45 
-29 
Rock. 
534 
Broad-Exchange, southeast 
corner Exchange place and 
Broad street. ° 
f-41 j 
J— 49.6 
48.8, 
—46 
-31 
Gneiss. 
535 
Wall Street Exchange, north 
side Exchange place, be- 
tween Williams and Broad 
streets. ° 
r— 41. li 
-43. 6 
' -46. 5 
-42.3. 
—43 
-26 
Do. 
536 
Bank of State of New York, 
Exchange place, between 
Broadand Williams streets./ 
-40 
-22 
Do. 
537 
New York Stock Exchange, 
Broad street, near Wall 
street. Q 
-60 
-29 
Do. 
538 
Atlantic Mutual building, 
Wall and Williams streets. ^ 
—51 to 
-55 
-22 to -26 
Do. 
539 
Hanover National Bank, Pine 
and Nassau streets. * 
- 28 to 
-48 
6to-14 
Rock. 
a Fry, Capt. A. B., chief engineer and superintendent United States public buildings No. 156, 
:>st-office building. 
foPurdy, C. T., consulting engineer, Geo. A. Fuller Construction Company. 
o Engineering Record, vol. 47, 1903, p. 377. 
d Robertson & Potter, architects, 160 Fifth avenue. Engineering Record, vol. 45, 1902, p, 557, 
e Engineering Record, vol. 46, 1902, p. 227. Rock believed to be gneiss, 
/Idem, p. 299. 
©Idem, p. 155. Maximum depth below new street curb. 
h Idem, vol. 42, 1900, pp. 157-158. 
i Idem, vol. 45, 1902, p. 298. Rock presumably gneiss. 
