PRECISE LEVELING 17 
Feet. 
Cobleskill, in front of Delaware and Hudson station; top of norl h rail 909 ; 
Ba rnerville, crossing, on rock 50 feet north of railroad; chiseled squa re 903 833 
Barnerville, crossing, in front of station; top of north rail < )|)( - , 
Howe Cave, in front of Delaware and Hudson station; top of south rail 795. ) 
Howe Cave, 1.2 miles east of, bridge seat at northwest cornei of small bridge or open culverl 
bronze tablet stamped " 731 A" 730 72 5 
Central Bridge, in front of Delaware and Hudson station; top of north rail 621. 1 
Schoharie Junction, in front of Delaware and Hudson station; top of north rail 598. 8 
Esperance, 1,250 feet west of Delaware and Hudson station, north end of stone culverl under 
Delaware and Hudson Railroad, in coping stone; bronze tablet stamped " 753 A" 752. 440 
Esperance in front of Delaware and Hudson station; top of north rail 768. 
BERNE QUADRANGLE. 
Delanson, in front of Delaware and Hudson station; top of south rail 812. 5 
AMSTERDAM QUADRANGLE. 
Duanesburg, 1,000 feet west of Delaware and Hudson station, north end of east abut ment of 
bridge; bronze tablet stamped "681 A" 680.822 
Duanesburg, in front of Delaware and Hudson station: top of south rail 676.6 
Kelleys, at station; top of rail 490. 9 
Kelleys, 1.75 miles east of, 750 feet east of highway, at east abutment, of cattle and wagon pass, 
in coping stone; bronze tablet stamped "410 A" 409.008 
South Schenectady, at road crossing of West Shore and Delaware and Hudson railroads; top 
of rail 349. 1 
SCHENECTADY QUADRANGLE. 
Schenectady, New York Central and Hudson River Railroad bridge over Erie Canal, north- 
east corner of coping stone of abutment wall; bronze tablet stamped " 242 A" 241.195 
SCHENECTADY, ALONG THE ERIE CANAL, TO COHOES. 
Schenectady, 4 miles east of , Rexford Feeder Bridge, Erie Canal; coping 1.5 feet from south 
corner west abutment 217. 244 
Rexford, 3.5 miles east of; coping stone on south corner of east wall of west Lock No. 20 208.305 
Rexford, 3.5 miles east of; top of screw bolt fastening down collar of southwest gate of west 
Lock No. 20 208. 396 
Rexford, 6.5 miles east of; top of projection of stone on second course of masonry at east, cor- 
ner of south abutment of second canal bridge below Lock No. 19 190. 870 
COHOES QUADRANGLE. 
Cohoes, 3.5 miles west of, east end of lower Mohawk Aqueduct, southwest corner of parapet 
wall; chiseled cross inclosed by circle 194. 608 
Cohoes, on top of wall west side of mill race between Locks Nos. 15 and 16, 6 inches from north- 
east corner of small brick building between mill race and towpath; chiseled cross 159. 404 
Cohoes, Lock No. 15, on east wall, south end of west lock; cross cut on second foot-iron clamp, 
(U. S. Engineer Corps bench mark) 159. 890 
Cohoes, Lock No. 15, southwest corner of east wall of west lock; top of point of coping 159. 810 
CHENANGO, DELAWARE, MADISON, ONEIDA, AND OTSEGO 
COUNTIES. 
DEPOSIT, HANCOCK, NEW BERLIN, ONEONTA, ORISKANY, SIDNEY, LTICA,* WALTON, WIN- 
FIELD, A>D SANGERFIELD QUADRANGLES. 
The elevations in the following list are the result of a line of precise leveling over the 
following route. A small circuit was first run in Utica, recovering various bench marks 
of other level lines, and closed with an error of 0.01 foot in a total distance of 4.0 
miles of double-rodded, direct and reverse, simultaneous lines. The main line thence 
continues south from Lock No. 46 to a connection near Sidney, or 2.7 miles east of Bain- 
bridge, with the precise-level line run in 1899 by Mr. E. L. McNair, topographer, (he results 
• of which were published in the Appendix to the Twentieth Annual Report of the Geological 
Survey, Part I, and are republished in this bulletin as corrected by the 1903 adjustment. 
Bull. 281—06—2 
