CALIFORNIA. 
135 
YOLO NORTHWEST BASE, YOLO COUNTY. 
In the SE. J sec. 28, T. 10 N., R. 1 E., Mount Diablo meridian, L] 
niles west of the railroad passing through Woodland, and immedi- 
itely on the north side of county road running west toward Madison 
md Capay Valley. 
Station mark: A needle hole in a German-silver plug in a copper 
)olt in top of a granite block 35 inches long by 20 inches square at t he 
)ase and drest to 12 inches square at the top, having letters "U. S. 
E & G. S." deeply cut on it. The top of the brick is 4 1 feet below t he 
surface and a glass hemisphere is placed over the copper bolt. The 
surface mark is a fine needle hole in a copper bolt set in lead on top 
)f a granite block 25 inches square by 26 inches deep, having the 
etters "U. S. C. S. S. E. Yolo base" cut on it. Top of block is 
iven with surface of ground and block itself is in center of a solid 
)rickwork pier, having a base of 70 inches square at a depth of 50 
nches below surface, battering to 54 inches square at surface. This 
)rickwork was carried to a height of 33J feet above surface and 
japped with a granite slab 40 inches square by 8 inches thick with a 
E-inch hole in the center. Charcoal and charcoal dust were mixt 
Arith the earth in filling around the subsurface part of the structure. 
No reference marks. 
[Latitude 38° 40' 44.806". Longitude 121 ° 51' 28.553".] 
To station— 
Azimuth. 
Back azimuth. 
Log. 
distance. 
O 1 II 
343 05 07.93 
3 09 32.63 
30 25 42.34 
6 09 09.95 
31 06 25.94 
67 30 50.55 
86 47 29.67 
117 41 12.32 
161 27 01.74 
216 57 42.68 
270 10 20.19 
279 35 42.44 
O 1 II 
163 07 18.98 
183 07 28.85 
210 17 15.66 
186 08 37.82 
211 01 37.33 
247 23 55.40 
266 35 03.73 
297 31 16.55 
341 25 49.98 
36 59 38.45 
90 13 32. 13 
99 38 53.68 
Meters. 
4.2427032 
Diablo 
4.9474512 
/aca 
4. 5909077 
cott 
4. 0653494 
Winters 
4.3362415 
Sorbin 
4.2406557 
lonticello 
4.4610020 
4.4141826 
lesa 
3.9399342 
folo 
3.8714131 
Woodland city hall 
3.8706276 
Woodland high school 
3. S752754 
YOLO SOUTHEAST BASE, YOLO COUNTY. 
In the NW. J sec. 19, T. 8 N., R. 2 E., Mount Diablo meridian, 3J 
niles west and 1| miles south of Davisville and about 25 meters from 
ihe left bank of Putah Creek. 
Station mark: Same as Yolo northwest base, viz, needle hole in 
merman-silver plug in copper in granite block 4^ feet below surface, 
prith another needle hole in a copper bolt in lead in a granite block 
tven with ground, in center of a brick pier extending to a height of 33 j 
eet above ground, capped by a granite block. 
Reference marks: Four marks were set, consisting of granite blocks 
foot square and l\ feet high, with copper bolts and drill holes on 
