538 BAROMETRIC ALTITUDES. 
Top of “ Lava Castle,” near mouth of Blackwood’s Creek ‘ : , : : . 6524 
Mt. Anderson . : : : ; a : * ; F : ; : ; 9000 
Highest silicious schists, head of Ward’s Valley. ‘ : , : ‘ ‘ . 8459 
McConnell’s sheep station, Ward’s Valley. ‘ : : ‘ ; ‘ ' ; 6664 
Top of “ Bonaparte’s Hat, No. 2” . : : i : : ; : : . . 8661 
Base of summit cliffs, Bonaparte’s old hat, “Twin Peaks” . ; : : : 8724 
Sugar Pine Pass . ; —— : ; i P : ‘ : Z : . ioe 
Top of mountain, three-fourths mile east of, and overlooking, Sugar Pine Pass’. ? 7868 
Point of rock, estimated to be 275 feet above the beginning (western end) of moraine at 
Sugar Pine Point F ‘ ; ; : ; : ‘ ‘ ‘ . 7745 
PLACER AND NEVADA COUNTIES. 
POINTS NEAR LINE OF C. P. R. R., FROM SUMMIT TO BLUE CANON. 
Level of small lakes in valley on trail from Summit to Mt. Stanford ‘ : ‘ . F219 
Spring on south slope of Mt. Stanford . eae” “ : : . 7966 
Top of Mt. Stanford. : : : . E : : ae : : . 9102 
Crystal Lake House, second floor . : : : : P : : ; ; 5955 
Point one-fourth mile west of South Yuba tunnel (leading from Bear River to south fork 
of Steep Hollow). . ‘ ; : : : : : eas): . . 4472 
Water level, Yuba River, Cisco Flats, June, 1870 : : ‘ : . ; 4696 
Tompkins’s Hotel, Bear Valley . ' ’ : : . : . p . 4588 
Bear Valley, foot of trail from Emigrant Gap station . ; : , : , : 4665 | 
Point on road from Emigrant Gap to Bear Valley, level with low moraine on north side of 
Bear Valley : : : F : ; 5 : ‘ 4 ye ‘ . 4913 
Summit of moraine junction, above Wilson’s Valley . , wie ya : ; : 6049 
Top of highest moraine, below Emigrant Gap station  . , : ; ‘ : . 5490 
Lower level of lava near saw-mill in Wilson’s Ravine, about a mile westerly from Emigrant 
Gap station . : : ' ; <2 By : ee ‘ : E 4900 
Bed-rock in Boston claim. ; 2 Pe le . Ae ° : . 4214 
Bed-rock in Slumgullion claim . A : Re eet aera: : yes E : 4386 
Lower limit of lava, as seen in C. P. R. R. cuts, above Blue Cajion station . : . 4870 
Top of lava ridge east of Blue Cafion station . : a. 2S F : é ‘ 5071 
Highest slate-rock seen up Blue Cafion creek, three eighths of a mile from the station . 4799 — 
Brow of Grizzly Hill, one mile southwest of Blue Cafion station .  . ey ale , 4911 
