wilson etal.] PENNSYLVANIA-MARYLAND. 77 
Feet. 
Warners ville, 0.5 mile west of; Philadelphia and Reading Railroad 
highway bridge over, at south abutment, east side, on base 384. 99 
South Mountain station; top of rail opposite . 394. 76 
Robsonia station, 0.1 mile east of; Philadelphia and Reading Railroad 
bridge over creek, north side and middle pier on United States Coast 
Survey bench mark No. XXIV .. ._ . 432.802 
Robsonia Furnace, opposite road west; on railroad spike 482. 70 
Robsonia Furnace, sign " To Flickengers 5 miles, Womelsdorf 3 miles," 
west corner forks of road; stone. 836. 44 
Berks-Lancaster County line; stone on east side of road and 300 feet 
south of house, on top of .. . .. .1,043.80 
Berks-Lancaster County line, about 0.9 mile south of and 0.1 mile south 
of house at road forks; bronze tablet set in large bowlder, marked 
"HARRISBURG 983".. 982.760 
PENNSYLVANIA-MARYLAND. 
BLAIR AND BEDFORD COUNTIES, PA. ; ALLEGANY COUNTY, MD. 
Everett and Hollidaysburg Quadrangles, Pennsylvania; Frostburg 
Quadrangle, Maryland. 
The elevations published in the following list are based on a copper 
bolt in the door sill of the Pennsylvania Railroad passenger station at 
Altoona, Pa. The elevation of this, as collected by the United States 
Coast and Geodetic Survey in their Latesl adjustment, is accepted as 
1,181.373 feet above mean sea level. This is 0.173 foot greater than 
the elevation of this bench mark as given in the Pennsylvania Rail- 
road list of elevations, published May 1, 1900. The immediate eleva- 
tions on which the leveling reported upon herewith is based are of 
various bench marks of the latter publication between Altoona and 
State line, which are given the same correction. 
A connection is made between Stateline and a precise bench mark 
of the United States Coast and Geodetic Survey at Cumberland, Md., 
by primary levels of this list between Mount Savage, Md., and State- 
line, and elevations listed in the Nineteenth Annual Report of the 
Director of this Survey, page 363, between Mount Savage and Cum- 
berland. The circuits therein listed and based on the Cumberland 
bench mark are to be lowered 0.006 foot. This includes the correction 
made by the United States Coast and Geodetic Survey t.o the eleva- 
tion of that bench mark of 0.005 and a correction of 0.001 made in the 
Twentieth Annual Report to the elevation of a bronze tablet at that 
place. 
The leveling was executed in 1900 under the direction of Mr. A. M. 
Walker, topographer, by Mr. B. C. Shepherd, levelman. 
All bench marks set in the course of this work are referred to the 
tablet set by this Bureau at Harrisburg, Pa., and are stamped with 
the letters "HARRISBURG " in addition to their figures of elevation. 
