40 SPIRIT LEVELING. [bittju 185. 
GILBOA, VIA BLENHEIM, TO HREAKABEEN. 
Feet. 
Gilboa, 1 mile north of; 100 feet south of schoolhouse, on west side of 
road . bowlder, chisel marked . . . . - 948. 72 
Gilboa, 2 miles north of; 50 feet west of fork of roads, on south edge of 
road, flat stone, chisel marked ... .„ :. .. 984.22 
Gilboa, 4 miles ncrth of; 100 feet north of junction with road from 
Grand Gorge, on west side of road, bowlder, chisel marked . 1, 141. 63 
Blenheim, 2 miles south of ; 400 feet south of fork with private road to 
east, flat rock, chisel marked . - 1 , 009. 17 
Blenheim, 350 feet south of Blenheim House; on west side of street, 
point on ledge of rock, chisel marked ._ . 813. 67 
Blenheim, 300 feet north of post-office; northwest side of road, in ledge 
of rock, aluminum tablet, marked " 813 ALBANY" 812.779 
Blenheim, 1 mile northeast of ; bridge over Schoharie Creek, north side 
of road, on wing wall at west end of, chisel marked. . _ . 791. 24 
Blenheim, 2.3 miles northeast of ; southeast side of road 200 feet north 
of farmhouse, on rock, chisel marked . . . ..._._. 754. 09 
Breakabeen, Lutheran Church; aluminum tablet, marked "ALBANY 
754" 753.723 
FRANKLINTON TO LIVINGSTONVILLE. 
Franklinton, 1.2 miles south of; east side of road, 150 feet south of 
unpainted farmhouse and 25 feet south of watering trough, rock, chisel 
marked. 1,159.75 
Livingstoneville, 0.7 mile west of; in fork of roads, on brownstone 
rock, chisel marked . 1 . 074. 29 
Livingstoneville, Methodist Church; in northwest corner of, bronze 
tablet, marked "ALBANY 1077 ".. 1,076.716 
ULSTER AND ORANGE COUNTIES. 
Newburg Quadrangle. 
The elevations published in the following list are based on an 
aluminum tablet set in the front face of the city hall, in Poughkeepsie, 
and marked "173 ALBANY 1899." The height of this is derived 
from a bench mark established in Poughkeepsie by the United States 
Coast and Geodetic Survey, the elevation of which, as corrected in 
accordance with their adjustment of 1900, is accepted as 42.956 feet 
above mean sea level. Dependent on this, the datum tablet of this 
survey in Poughkeepsie is accepted as being 172.613 feet above mean 
sea level. 
The leveling was executed under the direction of Mr. G. G. Bassett, 
topographer. A portion is republished of levels of Mr. Seth Van 
Loan, levelman, run in 1899, and published in the Appendix to the 
Twenty-first Annual Report of the Director of this Bureau, on pages 
405, 406, and 407. They are republished here because of an error of 0. 97 
foot, by which the figures previously published exceed the corrected 
elevations given herewith. These figures include a gross error of 1 
foot in leveling from Poughkeepsie, via Highlands, along West Shore 
Railroad to Newburg (pages 404 to 405 of that report), less a correction 
