200 
PRIMARY TRIANGtaATlON AND PRIMARY TRAVERSE. 
BLACK, CHOUTEAU COUNTY. 
On Black Butte, 1.5 miles south of Big Sandy-Marias road and 1 
mile east of Black Coulee. 
Station mark: An iron bench-mark post set 36 inches in the ground. 
Reference marks: A bottle 8 inches underground, true azimuth, 
342° 58'; distant 4.85 feet from station; a bottle 8 inches underground, 
true azimuth, 168° 28'; distant 5.39 feet from station. 
[Latitude 48° 14' 15. 94". Longitude 110° 32 / 37.78*.] 
To station- 
Discovery 
Shepard . . 
Marias . . 
Lonesome 
High 
Carp 
Azimuth. 
21 39 36.53 
65 25 32. 31 
114 44 57.78 
218 50 04.77 
2S4 10 46.44 
311 34 45.24 
Back azimuth. 
201 36 48. 70 
245 16 33.69 
294 36 43. 08 
38 55 48. 78 
104 20 26. 23 
131 44 37.28 
Log. distance. 
Meters. 
4. 1008816 
4. 2151397 
4. 1774275 
4. 1799026 
4. 2190437 
4. 2953139 
BOX, CHOUTEAU COUNTY 
On prominent hill about 19 miles west and 5 miles north of Box 
Elder railroad station. 
Station mark: An iron bench-mark post set 40 inches in ground. 
Reference marks: A bottle 8 inches underground, true azimuth, 
L75 01'; distant 5.53 feet from station; bottle 8 inches underground, 
true azimuth, 7 34': distant 4.7 feet from station. 
[Latitude 48° 25 / 37.42 // . Longitude 110° 22 / 50.44".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance. 
O / If 
15 41 56.59 
232 24 48.85 
306 21 05. 42 
346 05 58. 19 
o / II 
195 40 22.00 
52 29 58. 88 
L26 26 33.79 
166 06 45. 40 
Meters. 
3. 9835522 
Vail 
4.0363208 
Line 
Reservoir 
4. 0500828 
3. 7329844 
BROWN, CHOUTEAU COUNTY. 
On a flat hill 12 miles north of Burnham railroad station, near head 
of Browns Coulee and just west of Cottonwood Coulee. 
Station mark: An iron bench-mark post set 36 inches in the ground. 
Reference marks: A bottle 8 inches underground, true azimuth, 
163° 03"; distant 8. 2 feet from station; a bottle 8 inches underground, 
true azimuth, 347° 52'; distant 8.2 feet from station. 
