58 PEIMARY TRIANGULATION AND PRIMARY TRAVERSE. 
MONTGOMERY COUNTY, ROCKVILLE QUADRANGLE — Continued. 
Geographic positions along highways — Continued. 
Station. 
Latitude. 
Longitude. 
Forks of road, 60 feet northeast to telephone pole, 50 
feet east to telephone pole 
Forest Glen, street car crossing 1 mile south of 
Overhead bridge 
Triangle, junction Brookville pike and road to Forest 
Glen, 45 feet southwest to cedar tree at gate, 25 feet 
northwest to telephone pole 
Burnt Mills, 4 corners, 1 mile west of, junction Coleville 
pike and Blanehard and Wheaton road, 33 feet west 
to real estate office 
Burnt Mills, 4 corners, 1 mile west of, cemented in north 
stone of gatepost to entrance to farm of Mr. Kolk, 
aluminum tablet stamped "Prim. Trav. Sta. No. 361" 
38 59 46. 3 
38 59 59. 9 
38 59 52. 1 
39 00 34. 5 
39 01 13. 1 
39 01 13. 2 
77 05 48. 7 
77 04 37. 8 
77 03 25.9 
77 02 27. 5 
77 00 47. 1 
77 00 46. 3 
MONTGOMERY COUNTY, SENECA QUADRANGLE. 
Geographic positions along highways. 
Station. 
Latitude. 
Longitude. 
Clarksburg, 3 corners at, 30 feet northwest to corner 
post, 50 feet northeast to stone at corner iron fence 
Clarksburg, 3 corners 1 mile northwest of 
o 
39 
39 
39 
39 
39 
39 
39 
39 
/ // 
14 19.6 
14 49. 4 
14 33. 7 
14 48. 9 
14 11.5 
13 14.0 
13 36. 7 
13 25. 
O / II 
77 16 46. 7 
77 17 47.5 
Thompsons Corners, 400 feet west of store, 40 feet north- 
west to blazed tree, 30 feet southwest to post of yard 
fence 
77 19 20. 1 
Comus, cemented in large stone in northwest corner of 
intersection of crossroads, 60 feet northeast of north- 
east corner of post-office and 10 feet east of southeast 
corner of fence of W. A. Maxwell's house, aluminum 
tablet stamped " Prim. Trav. Sta. No. 384" 
77 21 00. 3 
Forks of road, 25 feet east to front-yard fence, 35 feet 
west to oak tree 
77-21 36.7 
Barnesville, 3 corners 150 feet west of schoolhouse in east 
edge of. 30 feet northeast to oak tree 
77 22 32. 3 
Little Monocacy River, center of iron bridge over 
Dickerson, center of bridge over Baltimore and Ohio 
Railroad, 1 mile northwest of 
77 24 20. 7 
77 26 27. 7 
