10 SPIRIT LEVELING IN NEW YORK, 1896 TO 1905. 
LUZERNE QUADRANGLE. 
Feet 
Hadley, 1.5 miles south of, at northeast corner of stone culvert, about COO feet west of red 
house on west side of highway, in coping stone; aluminum tablet stamped "634 ALBANY 
1899" .. 634.3 
Hadley, 3.25 miles north of, at northwest corner of steel-girder Bridge No. 9 over Wolf Creek, 
in coping stone of bridge seat; aluminum tablet stamped "630 ALBANY 1899" 630. 4 
Stony Creek, 0.4 mile south of, at northwest corner of steel-girder Bridge No. 10 over Stony 
Creek, in coping stone of bridge seat; aluminum tablet stamped "600 ALBANY 1899" . . . 600. 4 
Thurman, 1.25 miles north of station, at west end of south abutment of steel-girder Bridge 
No. 13, in coping stone; aluminum tablet stamped "628 ALBANY 1899" 628.2 
NORTH CREEK QUADRANGLE. . 
'The Glen," Delaware and Hudson Railroad station, 530 feet north of, at southwest corner 
of a steel-girder Bridge No. 14, 5 feet west of girder, in coping stone of bridge seat; alumi- 
num tablet stamped "749 ALBANY 1899" 749.5: 
Riverside, 230 feet north of station door, 65 feet west of center of main track, in large, flat 
rock outcrop 25 fee I west of road; aluminum tablet stamped "883 ALBANY 1899" 883. 64. 
North Creek station, 0.4 mile southeast of, bridge seat at southeast corner of steel-girder 
Bridge No. 18, 4.4 feet below east rail; aluminum tablet stamped " 1001 ALB VNY 1899".. 1,001.48 
North Creek station, 1,000 feet north of, in quarry outcrop on southwest side of track, 2 feel 
above track and 6 feet from southwest rail; bronze tablet stamped "1012" (set in 1896). . . 1,008.04 
JEFFERSON, LEWIS, AND ONEIDA COUNTIES. 
ANTWERP, BOONVILLE, CARTHAGE, CLAYTON, LOWVILLE, PORT LEYDEN, REMSEN, 
THERESA, AND WATERTOWN QUADRANGLES. 
The elevations published in the following list arc based upon the Greenbush bench mark 
the elevation accepted for which is 13.863 feet above mean sea level. The initial poin 
upon which these levels depend is a bronze tablet se1 in the coping at the north end o 
retaining wall between lower mill dam and Rome, Watertown and Ogdcnsburg Railroa< 
at Kenisen, N. Y., stamped "1172;" the elevation of this bench mark is derived by a read 
justment of primary circuits published in the Appendix to the Twentieth Annual Repor 
of the Geological Survey, Part I, starting from a bench mark of the precise-level net a 
Utica, and its elevation is accepted as 1,171.464 ivri above mean sea level. 
A closure was made at Limerick on a temporary bench mark on the south parapet wal 
of stone-arch bridge over Perch River. This bench mark is on a primary circuit tied a 
Clayton to bench mark "A" of the precise line of the Deep Waterways Board, being a cop 
per bolt in the water table at the southwest corner of the Catholic Church. The elevatioi 
of the latter, as corrected in the 1903 adjustment by the Coast and Geodetic Survey, i; 
accepted as 278.815 feet above mean sea level. 
The elevation of the Limerick bench mark, as determined by the primary circuit, i: 
317.0(Meet and by the precise line 317.09 feet above mean sea level. The latter elevatioi 
is accepted for this bench mark, the closure 0.03 foot being well within the closure erro; 
of the primary circuit. The list, therefore, as here presented, is the unadjusted meai 
results of double-rodded simultaneous precise leveling. The instrument used was a Bnll\S 
Berger precise level with an 8-second vial. The leveling was done by Mr. C. H. Semper 
levelman in charge, during the months of August and September, 1900. All standar< 
bench marks dependent on this datum are stamped with the letters "ALBANY," in addi 
tion to figures of elevation and year. The elevations marked are mostly 1 f6ot low, ar 
error caused in the field work by using an erroneous elevation published in the Appendix t< 
the Twentieth Annual Report of the Geological Survey, Part 1, page 354, for the Remsei 
bench mark, which is low by a clerical error of 1 foot, as noted in Bulletin No. 185. 
