136 PRIMARY TRI ANGULATION AND PRIMARY TRAVERSE. 
top, incased in brickwork 18 inches below surface. Two were in linel 
to the Yolo northwest base at a distance of 18 feet 11 T V inches and 
327 feet 10 inches from the center, and two were in line at right 
angles thereto eastward at a distance of 20 feet five-eighths of an inch 
and 328 feet 5 T 5 g inches from the center. 
[Latitude 38° 41' 42.185". Longitude 121° 47' 58.18".] 
To station 
Vaca 
Diablo 
Monticello 
Scott 
Stevens 
Yolo northwest base 
Green 
Hines 
Davisville 
Azimuth. 
55 
7 
114 
129 
135 
163 
175 
1 82 
252 
13.77 
54. 56 
55.20 
42.54 
42. 12 
18.98 
17.5C 
52.57 
52. 57 
Back 
azimuth. 

, 
„ 
235 
38 
37.32 
187 
52 
41.08 
2'. 13 
47 
L9.46 
309 
13 
59. 56 
315 
33 
36.12 
343 
or, 
07. 93 
355 
23 
08.21 
2 
.50 
01.08 
72 
30 
0(1. 54 
Log. 
distanci 
Meters. I 
4. 4775218 
4. 859908* 
4. 5700851 
3.9126M 
4. C,04306ai 
4. 2427031 
3.6546H 
3.S252S55 
3.7373120' 
MARIPOSA AM) TUOLUMNE COUNTIES. 
YOSEMITE SPECIAL QUADRANGLE. 
For the control of this special quadrangle diaries F. Urquhartl 
topographer, extended triangulation control from Pilot Peak and 
Devil Peak in 1905. Twelve stations, controlling an area of K)0« 
square miles, were located on the United States standard datum. 
CLOUDS REST, MARIPOSA COUNTY. 
On the highest point of Clouds Rest, a well-known mountain at the* 
northeast corner of the Yosemite State Park. There is a good trail 
from the Yosemite Valley to the summit of the mountain. Animalai 
can be taken within 200 feet (elevation) of top. 
Signal: A cairn 5 feet high, built of large, flat rocks. 
Station mark: A copper bolt set in rock very near and west 
cairn. 
[Latitude 37° 46' .05.58". Longitude 1 19° 29' 18.90".] 
To station- 
Starr King 
Devil Peak 
Sentinel Dome. 
Glacier Point. . 
Eagle 
Yosemite Point 
Flat 
Azimuth. 
Back azimuth. 
19 04 06.99 
40 00 43.66 
59 2\ 29. 37 
61 00 29.03 
77 39 36.31 
82 00 09.13 
107 11 17.36 
199 
219 
239 
240 
257 
261 
287 
04. 76 
32.29 
59. 94 
23. 16 
59. 80 
19.84 
27.92 
Log. 
distance. 
Meters. 
3.8821__ 
4.53811 1 
3.988483 T 
3.929395 | 
4. 053720 I 
3.9663M I 
4. 1(14443 f 
