198 PRIMARY TRI ANGULATION AND PRIMARY TRAVERSE, [bull.216. 
SUGAR LOAF, SHASTA COUNTY. 
About 2 miles northeast of the Mountain Copper Mine on a sharp 
peak locally known as Sugar Loaf. Most of timber cleared from top. 
Station mark : The pine signal tree trimmed up with tuft left at top, 
18 inches in diameter and marked " U. S." at base. 
[Latitude 40° 41' 12.8". Longitude 122 30' 42.2".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance. 
Bass 
Redding' - - 
247 53 42 
320 23 24 
16 53 53 
144 40 09 
67 59 20 
140 27 53 
196 53 21 
324 38 31 
Meters. 
4.11873 
4. 18361 
South Fork 
3. 59760 
Shirt 
3.78661 
SHIRT, SHASTA COUNTY. 
On the western of two bald knobs, about 6 miles north and 1 mile 
west of the Mountain Copper Mine and 1 mile northeast of the Glad- 
stone Mine. 
Station mark: A cairn 6 feet high and 4 feet diameter at base, 
erected over a + and "IT. S." cut in solid rock. 
[Latitude 40° 43' 54.5". Longitude 122 33' 12.9".] 
To station- 
Azimuth. 
Back azimuth. 
Log. distance 
/ // 
/ // 
Meters. 
Bass 
270 07 32 
90 14 49 
4. 19631 
Sugarloaf . 
324 38 31 
144 40 09 
3. 78661 
South 
344 45 11 
164 46 1 7 
3.95903 
OREGON. 
TRIANGULATION STATIONS. 
Triangulation in northeastern Oregon was extended from stations 
in the expansion of the Baker City base so as to control 3 thirty- 
minute quadrangles. Fourteen stations were occupied bj r Mr. C. F. 
Urquhart, topographer. 
IMNAHA, BAKER COUNTY. 
On the highest summit in southeast corner of Eagle Mountains, 
about 2 miles east from corner of Baker, Union, and Wallowa coun- 
ties, probably in Baker County, and is sometimes known as Red 
Mount. The Imnaha River (Kettle Creek) heads at its base and flows 
eastnortheast. Little Eagle Creek flows southwest and Pine Creek 
