WILSON ET AI,. ] NEW YORK 45 
DUTCHESS AND COLUMBIA COUNTIES. 
poughkeepsie, rhinebeck, mlllbrook, dover, copake, and klnderhook 
Quadrangles. 
The elevations published in the following list are derived by con- 
nection with two lines of precise leveling carried to Greenbush, N. Y., 
near Albany, from mean sea level at New York and Boston and 
adjusted to the corrected mean elevation of the Greenbush ''Grist- 
mill" bench mark as determined by the latest adjustment of the 
United States Coast and Geodetic Survey. Part of this list consists 
of levels adjusted between Poughkeepsie and Chatham, and the bench 
marks listed between Poughkeepsie and Millerton, via Clinton Cor- 
ners and Dover Plains, are republished, from the Appendix to the 
Twenty-firsl Annua] Report of the Director of this Bureau, following 
the title on page L01, with corrected elevations resulting from this 
adjustment. The remainder of the list consists of levels adjusted 
Detween Niverville and Hudson. The descriptions and elevations of 
the connecting points are given in the body of the list. 
The Leveling was executed under the genera] direction of Mr. C. C. 
Iiassett, topographer, in L899 ami 1900, the portion which is here 
republished from the lasl report being the result of leveling by Mr. 
Seth Van Loan, levelman, in L899, the remainder being the work of 
Mr. George Baily, Levelman, in 11)00. 
All bench marks are referred to the Gristmill bench mark near 
Albany, the elevation of which is accepted as L3.577 feci above mean 
sea level, and are marked by the Letters "ALBANY" in addition to 
their figures of elevation. 
POUGHKEEPSIE. 
Feet. 
Station; brass bolt keyed in fifth stone above ground, second step from 
east end of column on north side of arch bridge, marked " + ". 42. 956 
Intersection of Main street and Davies place: top of iron post . 82. 25 
Intersection of Mill and North Bridge streets; top of hydrant . . 13:!. 89 
Intersection of North Bridge and Mansion streets: top of northeast curb 141. 00 
Intersection of Mansion and Washington streets: top of northwest curb 166. 57 
Intersection of Mans on and Gardner streets; top of northeast curb_ . . 168. 16 
Railroad repair shop; top of plug in 2-inch pipe set in ground 4 feet west 
of southwest corner of 181.80 
Poughkeepsie and Eastern Railroad station; joint of rail nearest 181. 84 
City hall ; tablet set in front face, marked ' 'ALBANY 173" 172. 613 
POUGHKEEPSIE, VIA PLEASANT VALLEY AND SALT POINT, TO CLINTON 
CORNERS. 
Poughkeepsie: point on corner first step, east abutment; south end of 
bridge over small creek, first east of station . . .. _ . 172. 56 
Poughkeepsie; point on top stone of old culvert just east of Salt Point 
crossing . . _ .. . ... 193.49 
Poughkeepsie; point in circle on large rock between tracks of Pough- 
keepsie and Eastern Railroad and Poughkeepsie Bridge route, and 
about i mile east of Salt Point crossing 211. 53 
