WILSON ET AL. ] 
MARYLAND-DELAWARE-VIRGINIA . 
85 
the same railroad new values are to be given in accordance with the 
result tabulated below : 
Name. 
Elkton 
Chesapeake City 
Locustgrove .. 
Barclay, 1 mile north of 
^Roberts 
Goldsboro 
Clayton 
Massey . .... 
Bohemia Mills 
Hartley 
Whitehall, crossroads ^_ 
Middletown . _ 
Old 
elevation. 
New 
elevation. 
Feet. 
Feet. 
29. 50 
30.14 
17. 354 
17.857 
76. 738 
77. 075 
69.36 
69.85 
77.985 
78. 469 
62. 863 
63. 548 
44. 646 
45.286 
65. 17 
65.77 
43.94 
45.36 
73. 576 
74. 176 
19. 426 
20. 066 
65.044 
65. 684 
Corrections for intermediate elevations between points above tabu- 
lated should be made by interpolation. Similar corrections to the 
above are to be made to all elevations published in the Appendix to 
the Twenty-first Annual (p. 443), and depending on central datum 
tablet at Baltimore. 
KENT, QUEEN ANNE, TALBOT, CAROLINE, DORCHESTER, WICOMICO, 
WORCESTER, AND SOMERSET COUNTIES, MD. ; KENT AND SUSSEX 
COUNTIES, DEL. ; AND ACCOMAC COUNTY, VA. 
Betterton, Chestertown, St. Michaels, Preston, Oxford, Crapo, Nanti- 
coke, Salisbury, Barclay, Seaford, Denton. Harrington, Princess Anne, 
Deal Island, Crisfield, Snowhill, Pittsville, and Ocean City Quad- 
rangles. 
The elevations in the following list are the result of field work of 
the seasons of 1899 and 1900, and are based on an aluminum tablet 
in the city hall, Baltimore, Md., the height of which is accepted as 
20.63 feet above mean sea level, as derived from United States Coast 
and Geodetic Survey tide gage in the city of Baltimore. 
The leveling was done under the direction of Mr. W. Carvel Hall, 
topographer, by Messrs. C. H. Smith, T. D. Leonard, George Baily, 
John W. Hodges, and C. H. Semper, levelers. 
All bench marks dependent on this datum are marked with the 
letters " BALTO." referring them to the Baltimore bench mark. 
