CALIFORNIA. 
181 
i; \Kl)V, SAN DIEGO COUNTY. 
On a low sand hill on the south side of main sand ridge, about 17 or 
18 miles a little south of east from Sunset Spring, and it can probably 
be most easily reached from that place. The ditch east from Eioltviile 
may be closer water. There is no road and either way is through 
sand. The sand hill on which the signal stands is constantly moving, 
and the standard bench-mark post, which was set in sand for station 
mark, may be covered up or blown out of the ground within a very 
short time. 
Signal: A lumber tripod. 
Station mark: A standard bench-mark post set in the ground. 
[Latitude 32° 52' 41. 74". Longitude 115° 04' 49.21".] 
To station- 
Gravel - . 
Hog 
Holtville 
Sunset 
American 
Blizzard . 
Azimuth. 
o 
12 
33 
17. 
48 
58 
34 
14. 
53 
73 
1 i 
59 
65 
108 
53 
49 
36 
274 
10 09 
72 
299 09 
59 
81 
Rack azimuth. 
192 31 41.28 
238 29 12.31 
253 05 04.40 
288 47 25. 62 
94 20 50. 67 
119 13 29.38 
Log. cli- 
Meters. 
4 3281747 
4. 2302956 
4.4745810 
4. 2877086 
4. 4884104 
4. 0609667 
HOLTVILLE, SAX DIEGO COUNTY. 
On a small sand hill about 15 feet above the general elevation of the 
ground, about one-half mile south from the town of Holtville and on 
the south side of the Alamo River. 
Signal: A platform 20 feet high with target about 12 feet higher. 
Theodolite elevated 25 feet. 
Station mark: A standard bench-mark post set 44) inches in the 
ground. 
[Latitude 32° 48' 01.37". Longitude 115° 23' 06.89".] 
To station 
Azimuth. 
Sharp 
Signal Mountain 
Imperial 
Brawley 
Sunset 
Hardy 
Hog 
Mesquite 
49 13.95 
57 04 29. 68 
109 25 47.09 
143 50 23.35 
214 17 36.78 
253 05 04. 40 
270 55 06. 03 
317 07 26. 77 
Back azimuth. 
180 49 09.89 
236 53 59.98 
289 20 01.32 
323 45 28.93 
34 21 09. 15 
73 14 59.65 
90 59 58. 74 
137 11 04.44 
Log. distance. 
Meters. 
4. 1347675 
4. 5585846 
4.2451920 
4.3777290 
4.2563137 
4.4745810 
4.1480281 
4.1876380 
