HOBBS.] 
FOUNDATIONS FOR SCHOOL BUILDINGS. 
71 
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 v. S. 
(latum, 
Sandy 
Hook. 
Kind of rock, if known. 
Miscellaneous— Foundations for school 
buildings. « 
Wadsworth avenue — 
1002 
Northeast corner 182d street. .. 
— 8 
"Gneiss." 
1003 
Southeast corner 183d street . . . 
- 1.50 
Do. 
1004 
182d street, 150 feet east of 1002. 
. 50 
Do. 
1005 
183d street, 150 feet east of 1003. 
2. OS 

Do. 
1006 
75 feet east and 92 feet north of 
1002. 
West side Fulton avenue — 
-14 
Do. 
1007 
34 feet north of East 173d 
street. 
-13.75 
"Granite." 
1008 
214 feet north of East 173d 
street. 
-10. 75 
Do. 
1009 
86 feet west of 1007 
-13. 25 
-17 
Do. 
1010 
86 feet west of 1008 
Do. 
5 feet west of Anthony avenue — 
1011 
18 feet north of Mount Hope 
avenue. 
-20. 83 
"Mica." 
1012 
36 feet north of Mount Hope 
avenue. 
7.75 
Do. 
1013 
56 feet north of Mount Hope 
avenue. 
-18. 50 
Do. 
1014 
75 feet north of Mount Hope 
avenue. 
-17.33 
Do. 
1015 
61 feet west of 1011 
-10.83 
- 8.41 

Do. 
1016 
19 feet north of 1015 
Do. 
1017 
18 feet north of 1016 
-10.25 
Do. 
1018 
20 feet north of 1017 
-7.50 
Do. 
6 feet west of Trinity avenue — 
1019 
18 feet north of 135th street 
- 9.50 
Do. 
1020 
105 feet north of 135th street. . . 
- 1 8. 50 
Do. 
1021 
34 feet west of 1019 
-21.16 
Do. 
1022 
34 feet west of 1020 
-14. 16 
Do. 
45 feet west of 177th street *>— 
1023 
63 feet south of Vyse avenue. . . 
9.50- 
"Granite." 
1024 
150 feet south of Vyse avenue. . 
1.83 
Do. 
a Snyder, C. B. J., architect, department of education. Datum oi Nos 1< m -loot; is point on curb of 
sidewalk directly opposite the boring; of 1007-102-2, surface of ground, all others refer to highest 
point of curb of sidewalks adjoining site. 
t Datum of Nos. 1023-1027 is point on curb comer 177th street and V yse avenue. 
