84 SPIRIT LEVELING. [bull. 385. 
Feet. 
Hickory, 1 mile west of; on nail in root of cedar tree on south side of 
road in Jones's field, marked " 448 " on tree . 450. 33 
MOUNT CARMEL, VIA HEREFORD, TO MONKTON, ALSO PARKTON, WHITE- 
HALL, AND GLENCOE. 
Mount Carmel; bronze tablet in foundation stone of porch in northeast 
corner of Miller's store and post-office, marked " BALTO.674". 674.052 
Mount Carmel, 1.1 miles east of; on nail in root of chestnut tree in woods 
on top of small knoll, marked " 672 " . . . 671. 50 
Mount Carmel, 2.1 miles east of; on nail in root of small hickory tree 
north side of road, near house to left, marked " 661 " on tree_ 660. 78 
Evna, 1.5 miles east of; on nail in root of chestnut tree south side road, 
in woods to right, marked "657 " on tree . 657. 31 
Evna, 2.5 miles east of; on nail in root of gum tree inside of fence on 
south side road, marked ' ' 614 " on tree 613. 73 
Hereford; on top of stone at corner of road running east from York 
pike, marked " 671 " ..._ 671.19 
Hereford, 1 mile east of; on nail in root of large chestnut tree south 
side road, opposite camp grounds, marked ' ' 638 " . . 637. 59 
Hereford, 2 miles east of; on nail in root of chestnut tree in woods at 
top of hill west of Monkton station, marked "598 " on tree . _ ~ . 598. 30 
Monkton, 0.5 mile north of; copper bolt in center of east end of North- 
ern Central Railroad box culvert. Pennsylvania Railroad bench 
mark No. 26 . - ' .. . 317.77 
Parkton; copper bolt in rock 175 feet east of Northern Central Railroad 
track and 300 feet south of station. Pennsylvania Railroad bench mark 
No. 31 420.77 
Glencoe, 0.25 mile north of; copper bolt in center of east end of arch 
under Northern Central Railroad track. Pennsylvania Railroad 
bench mark No. 23. 256.85 
Whitehall; bronze tablet in northwest corner of post-office, 2 feet above 
ground, marked "BALTO.348" 348.229 
MARYLAND-DELAWARE-VIRGINIA. 
As result of the field work of the season of 1900, connections have 
been made between the entire group of levels from Baltimore south- 
eastward to the lower end of the Eastern Shore with six widely dis- 
tributed tide gauges of the Coast Survey. The result is a mass of 
data which has permitted the making of final adjustments of the lev- 
eling of past and preceding years throughout this area. 
Corrections to all bench marks published in previous annuals for 
leveling in this region should be made as follows: 
To bench marks depending on datum tablet at Middletown, Del., 
published in the Appendix to Eighteenth Annual (p. 279), and which 
lie to the north and west of the Philadelphia, Wilmington and Balti- 
more Railroad, a constant correction of +0.640 feet must be made. 
To all of the above-named bench marks lying to the south and east of 
