GANNIOTT.] 
CALIFORNIA. 
PILOT, SAN DIEGO COUNTY. 
193 
A station of the United States and Mexican Boundary Commission, 
on the highest point of a bntte of the same name, about 10 miles west 
of Yuma on the California side of the Colorado River. Reached from 
Yuma bjr crossing the river on the ferry and taking road through the 
Indian reservation to old stage station, where you strike the Southern 
Pacific Railroad again. Follow road along south side of railroad for 
2 miles, then turn off across country to foot of butte. 
Station mark: No mark was put in by the Boundary Commission, 
and the signal had blown down. A rock monument 6 feet high was 
built over the center, as nearly as it could be determined. 
Reference mark: A bronze triangulation tablet cemented in solid 
rock, true azimuth from rock monument, 242° 07', distance 11.3 feet. 
[Latitude 32° 43' 55.42"; 32° 43' 53.83". a Longitude 114° 44' 47.99"; 114° 44' 49.68". «] 
To station 
American 
Ridge 
Sugarloaf 
Yuma azimuth 
Azimuth. 
ITT 44 15.19 
223 15 29.56 
254 53 04.41 
280 44 IT. T6 
Back azimuth. 
357 44 03. T6 
43 21 2T.24 
T5 01 33. 12 
100 48 2T.64 
Log. distance. 
Meters. 
4. 1430949 
4. 3984893 
4. 403T6T0 
4. 0882T18 
a Position on Yuma data of the United States and Mexican Boundary Survey Commission. 
QUARTZ, SAN DIEGO COUNTY. 
On the highest point of a range of mountains lying between the 
Southern Pacific Railway and the Colorado River, about 8 miles from 
the river at Draper's ranch and probably 15 miles from the railway. 
Station .mark: A bronze triangulation tablet cemented in rock 
placed under center of a cairn 8 feet high. 
[Latitude 33 05' 19.64". Longitude 114° 49' 21.82".] 
To station- 
Fort Gass 
Lava _ . 
Clip 
American 
Azimuth. 
189 06 07.87 
242 24 30.43 
266 22 50.93 
345 38 23.65 
Back azimuth. Log. distanc 
9 07 38.33 
62 27 09.90 
86 30 37.22 
165 40 41.19 
Meters. • 
4. 4314275 
3. 9314387 
4. 3461066 
4. 4231629 
RIDGE, SAN DIEGO COUNTY. 
On summit of a high black ridge lying about 14 miles north, 10° 
west, of Yuma, Ariz. This ridge is long and wide, being several miles 
across it either way. Station is on one of the highest points where 
Bull. 216—03 13 
