WIIiSON BT AL. ] NEW YORK. 35 
ALTAMONT, ALONG DELAWARE AND HUDSON RAILROAD, To DELANSON. 
Feet. 
Altamont, \ mile west of; north end of east abutment of bridge, point 
on top marked ''0'' ....... . 484.26 
Altamont, 2.25 miles west of; 1,500 feet west of crossing, north side of 
track, point on large stone . .. 608. 15 
Quarry, track at, east frog 670 
Knox, 0.25 mile west of; small culvert, point on northwest corner of, 
marked ^0" .... 703.07 
Knox, 1.5 miles west of: 0.5 mile west of 21 milepost, small culvert, 
point on south end . .. .. ...... 758.46 
Knox, 1.75 miles west of; 900 feet west of road crossing, small culvert, 
point on north end of, marked "0' ; 771.28 
Duane, 1 mile east of; south side of track, point on stone . . 775. 71 
Duane, 900 feet east of; bridge, south end of east abutment of, point on 
top . 894.86 
Duane. 0.75 mile west of: south side of track, point on stone, marked "0". 801. 10 
Delanson, 0.75 mile east of; bridge, on top of south end of west abut- 
ment of 802.46 
SCHOHARIE, DELAWARE, OREENE, AND [JLSTER COUNTIES. 
Rhinebeck, Rosendale, Phoenicia, and Gtlboa Quadrangles, 
The elevations published in the following Lists are based on and 
adjusted between two bench marks. One is an aluminum tablel se1 
in 1 lie front face of the city hall in Poughkeepsie, N. Y.. stamped 
"173 ALBANY 1899," the elevation of which is accepted as 172.613 
feet above mean sea level, and the other a bronze tablel at the north- 
west corner of tho si on o foundation of Union schoolhouse at Oobleskill, 
N. Y., stamped "930 A," the elevation of which is accepted as 926.865 
feet above mean sea Level. The elevation of the Poughkeepsie bench 
mark depends directly upon that of a precise bench mark of the 
United States Coast and Geodetic Survey at the west abutment of the 
Poughkeepsie bridge, and the elevation of the Oobleskill bench mark, 
a precise bench mark of this survey, is taken as corrected by the United 
States Coast and Geodetic Survey. (See Report for 1898-99, Appendix 
No. 8, p. 543). 
The leveling was executed under the direction of Mr. C. C. Bassett, 
topographer, by Messrs. George Baily and \Y. S. I). Moore, Levelmen. 
All bench marks are referred to the Gristmill bench mark near 
Albany, the elevation of which is accepted as L3.577 feel above mean 
sea level, and are marked by the letters "ALBANY" in addition to 
their figures of elevation. 
POUGHKEEPSIE BRIDGE, ALONG WEST SHORE RAILROAD, TO KINGSTON. 
Feet. 
Poughkeepsie bridge; west abutment, southwest corner top stone, chisel 
marked . . . 224. 93 
Highland; intersection of Highland and Lewisburg roads, bridge, on 
northeast base block of, bent bolt had -_ 125.73 
Highland; opposite West Shore Railroad station, top of west rail 9.8 
