MARYLAND. 
59 
MONTGOMERY COUNTY, SENECA QUADRANGLE — Continued. 
Geographic positions along the Chesapeake and Ohio Canal between Monocacy River and 
Sandy Bun. 
Station. 
Monocacy aqueduct, cemented in coping of east wing wall 
of south abutment, aluminum tablet stamped "Prim. 
Trav. Sta. No. 442 " 
Culvert , 
Tower gate of Monocacy Lock No. 27 
Lock No. 26, towpath opposite upper gate 
Sawmill road, towpath opposite 
White's ferry bridge, towpath under center of 
D. C. Winbrener Landing No. 2, towpath opposite 
Edwards Ferry, Lock No. 25, cemented in top coping 
stone of west wing wall to south gate of, aluminum 
tablet stamped " Prim. Trav. Sta. No. 88 " 
Road north at two dwellings and red barn, towpath 
opposite 
Sycamore Landing, towpath opposite center of warehouse . 
Seneca Creek aqueduct, cemented in south wing wall of 
west abutment of, aluminum tablet stamped "Prim. 
Trav. Sta. No. 127" 
Rushville, cross mark in coping stone of upper gate at 
south end of Lock No. 23 
Pennfields, Lock No. 22, towpath opposite upper gate . . . 
Wood road, towpath opposite 
Latitude. 
39 13 23. 1 
39 14 36.9 
39 12 56. 8 
39 11 26.2 
39 10 25. 7 
39 09 16. 2 
39 07 08. 6 
39 06 11.2 
39 04 41.4 
39 04 25. 8 
39 04 05. 3 
39 03 59. 7 
39 03 15. 2 
39 02 43. 1 
Longitude. 
77 27 06. 5 
77 28 30. 8 
77 27 29. 7 
77 28 17. 1 
77 30 00. 
77 31 02.5 
77 29 56. 4 
77 28 20. 3 
77 26 23. 3 
77 25 09.0 
77 20 28. 5 
77 19 43. 
77 17 21.5 
77 16 25. 2 
Geographic positions along highways. 
Station. 
Latitude 
Longitude. 
Travilah, 4 corners at, 35 feet southeast to stone porch, 
25 feet northeast to front-yard fence 
Forks of road, small grass plat at, 275 feet west of iron 
bridge over Sandy Branch 
39 04 08. 7 
39 02 42. 5 
77 15 48. 6 
77 15 40. 9 
CARROLL, FREDERICK, AND HOWARD COUNTIES, RIDGEVILLE QUADRANGLE. 
Geographic positions along highways. 
Station. 
Libertytown, in face of south wall, 2 feet west of front 
entrance to public school No. 1, Liberty District No. 8, 
aluminum tablet stamped "Prim. Trav. Sta. No. 123 A" . 
Libertytown, Main and Church streets 
Albaugh's mill, forks of road just south of, 35 feet east 
to oak tree, 65 feet to oak tree at large rock 
Public school, 3 corners to west of, 25 feet northwest to 
mail box, 60 feet south to elm tree 
Latitude. 
39 29 05. 9 
39 29 06.4 
39 28 13.5 
39 27 24.2 
Longitude. 
77 14 40. 7 
77 14 26.3 
77 14 55. 5 
77 14 54. 9 
