178 PRIMARY TRIANGULATION AND PRIMARY TRAVERSE, [bull. 216. 
[Latitude 38° 26' 46.08 ". Longitude 114° 38' 51.92".] 
To station- 
Azimuth. 
FortGass.. 56 47 15.95 
Hodges...- 105 45 00.12 
Blythe 151 02 30.38 
Ehrenberg ... 1 201 83 51.10 
Chocolate 359 34 36.08 
Back azimuth. 
286 40 15. 12 
285 39 03.74 
330 58 34.62 
21 35 18.38 
179 34 38.99 
Log. distance. 
Meters, 
4. 3736406 
4. 2389082 
4. 3563840 
4. 2723120 
4. 2677230 
NO. 9, RIVERSIDE COUNTY. 
On a sand hill close to water's edge of Colorado River and about one 
half mile up the river from Riverside Landing, a camp and subpost- 
office for the mines in the Riverside Mountains. A road runs close 
by station going from Riverside Landing up the river, a little below 
the south line of the Colorado River Indian Reservation. 
Station mark: A bronze triangulation tablet cemented in a rock 
placed in ground level with surface. 
[Latitude 33 59' 02.34". Longitude 114° 29' 52.52".] 
To station— 
Azimuth. . 
Back azimuth. 
Log. distance. 
270 10 58. 13 
336 16 29. OS 
96 17 05.86 
156 19 46.52 
Meters. 
4. 23025 
4. 35484 
3. 55098 
Tyson 
Riverside 
Marie . _ _ . . _ - 
4. 36422 
1 
NO. 10, RIVERSIDE COUNTY. 
On the point of a black rocky ridge which comes close to the Colo- 
rado River, about 5 miles below Riverside Landing. This is the first 
ridge of the kind after leaving that place. Station is very low down 
on the point of ridge closest to river and is about one-half mile from 
water's edge. There are at least two other small rock cairns on differ- 
ent parts of the ridge, but No. 10 is much lower down than they are. 
Station is in sight of the river for a considerable distance up and 
down and can be reached by a trail from Riverside Landing. 
Station mark: A bronze triangulation tablet set in rock and placed 
under center of a cairn 8 feet high. 
[Latitude 33° 54' 51.11". Longitude 114° 32' 20.18".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance. 
No. 9 
o / // 
206 05 04. If. 
254 01 52.15 
26 06 26.63 
74 09 21.99 
Meters. 
3. 93552 
Agency . 
Riverside 
4.33273 
4. 05230 
