HOBBS.] 
RECORDS NOT CLASSIFIED. 
81 
Summary of records of borings made in New York and vicinity— Continued. 
2. BORINGS IN THE BOROUGH OF MANHATTAN— Continued. 
Location. 
Depth of boring to rock. 
.'Serial 
num- 
ber. 
As given. 
Referred 
to r. s. 
datum, 
Sandy 
Hook. 
Kind of rock, if known. 
Miscellaneous — Records not classified — 
Continued. 
1208 
Holt's well, near Fulton Market 
(130 feet deep). 
-126 
Rock. 
1209 
Perry and 4th streets (well at 
corner). 
- 70 
- 40 
Do. 
1210 
Ehret's brewery, corner Second 
avenue and 92d street. 

28 
Gneiss. 
1211 
Well, near Broadway and 13th 
street (113 feet deep). 
- 15 
2S 
Rock. 
1213 
City Hall Park, well 
- 90 
- 30 
5 
Do. 
1214 
Manhattan well, Duane street, 
near Center street. 
No rock 
1215 
Tenth avenue and 14th street 
- 40 
- 30 
Rock. 
1216 
Seventh avenue and 16th street. . 
- 20 
8 
Do. 
1217 
Ninth avenue and 16th street 
(120 feet deep). 
- 20 
- 4 
Do. 
1218 
Eleventh avenue and 19th street. 
-190 
-181 
Do. 
1219 
Eleventh avenue and 20th street. 
-170 
—160 
Do. 
1220 
Fifth avenue and 23d to 24th 
streets (well 2,103 feet deep). 

40 
Do. 
1221 
Lenox avenue and 110th street. . . 
- 50 
- 25 
Do. 
1222 
Lenox avenue and 116th street. . . 
Speedway « — 
- 40 
- 19 
Do. 
1223 
West 172d street 
- 88.'5 
- 52 
Do. 
1224 
West 173d street (32.5 feet into 
rock). 
West 174th street (56.8 feet into 
rock). 
Gneiss. 
1225 
- 53 
Do. 
1226 
Harlem River power house, Ninth 
avenue and 218th street. b 
-116 
—113 
Rock or bowlder. 
1227 
103d street, near First avenue 
(well).c 
- 40 
- 30 
No rock. 
1228 
104th street, east of Fourth ave- 
nue (well).^ 
- 40 
- 25 
Do 
1229 
105th street and East River 
(well)// 
- 40 
- 34 
Do. 
1230 
Power station, First avenue, 95th 
to 96th streets. « 
-125 
-115 
Rock. 
aNos. 1207-1225, Graether, L. F., Atlas of building laws of United States, vol. 1, 1898, pi. 2. 
decomposed gneiss; margin with overlying gravel not sharp; 159.2 feet to hard rock. 
bStarratt, M. G., chief engineer, New York City Railway Company. 
c Miller, David, owner. "Rock not sounded." 
d Henry, M. C, Company. " Rock not sounded." . 
e Engineering Record, vol. 40, 1899, p. 690. Other borings to 80 feet did not reach roct. 
Bull. 270—05 6 
No. 1223, 
