138 PRIMARY TRIANGULATION AND PRIMARY TRAVERSE, [bull.201. 
[Latitude 33° 16' 11.72". Longitude 108 35' 41.44 . 
T< i station- 
Azimuth. 
Back azimuth. 
Log. distance. 
o / 
o , 
Meters. 
Line 
._..! 39 02 56.22 
218 49 45.46 
4. 7769400 
Sunset _ . 
74 32 48.81 
254 12 01.18 
4. 7873988 
Canyon 
. 334 04 18. 19 
154 08 38.08 
4. 4502461 
PLEASANT, SOCORRO COUNTY. 
Situated on highest point of brushy mountain about 3 miles due 
west from Pleasanton. Brush and timber cleared from summit in 
1901. Easily ascended from "Frisco" River at Pleasanton via lane 
to west side of river and then by cattle trail to top of ridge, thence 
northward to station. 
Station mark: A bronze triangulation tablel cemented in bowlder 
in place 
[Latitude 33 L7' 57.90". Longitude 108 56' 21.62".] 
To station 
Sunset 
Canyon 
Billiard 
Azimuth. 
Back azimuth. 
53 II 5-2.30 
302 40 00.62 
330 Ki 35. us 
233 35 23.45 
122 55 39.16 
150 23 41.25 
Log. distance. 
Meters. 
4. 5235914 
4. 7232391 
4. 8784318 
PACIFIC SECTION OF TOPOGRAPHY. 
CAIjIFORlSriA. 
TRIANGULATION STATIONS. 
Central California. 
Control for the three fifteen-minute quadrangles south and east of 
Mount Diablo is based upon Mocho and Diablo stations of the Coast 
and Geodetic Survey. In addition to these, seven other stations were 
occupied, and three secondary points wore located by Mr. C. F. Urqu- 
hart, topographer, in November and December, 1901. Positions arc 
given on the "United States standard datum." 
BROWN, ALAMEDA COUNTY. 
Situated on a high prairie point in pasture land owned by Mr. 
Brown. It is best reached from Livermore via road up Mocho Creek 
to summit of ridge, thence a road turns northwest and passes very 
near station. 
Station mark: A small pile of rock around signal tree. 
