552 BAROMETRIC ALTITUDES. 
Bed-rock at northwest end of Orr’s mine, Hungarian Hill 
Bed-rock at foot of high gravel bank in upper part of ravine, near trail to Quincy . 
Summit on trail from Hungarian Hill to Quincy, near reservoir 
Quincy, Plumas House, second story . 
Crest of ridge above mines in Elizabethtown Flat. ; 
Mouth of Keller’s Deadwood tunnel, on Little Blackhawk Creek . 
Mohawk Valley ; Knott’s ranch 
Top of hill, near Babb’s house, on road from Knott’s ranch to Jamison City . 
Jamison City, Porch of Miners’ Home . 
Mohawk Valley, Mrs. King’s, second story . 
Cabin at Andrew Jackson’s mine . 
Sierraville, Globe Hotel 
BUTTE AND YUBA COUNTIES. 
POINTS IN THE NEIGHBORHOOD OF OROVILLE. 
Oroville, MeDermott’s drug-store, — assumed altitude 
Boston Ranch . 
Summit on stage road between Boston Ranch and Forbestown 
Forbestown Hotel 
Brownville, Post-office . 
Morris Ravine, W. C. Hendricks’s house ; ; , : : : 
Point on Hendricks’s ditch, near head of Good’s Ravine, northerly from Mt. de Oro . 
Base of basaltic cap near divide between Schermer’s and Morris Ravines J 
Bed-rock at Gregory’s claim, Oregon gulch 
Base of basaltic cap at cave, head of Coal Caiion . 
Point on stage road near Hutchinson’s house where road crosses upper end of Cherokee 
Flat mines 3 : 
Top of Sugar Loaf, Cherokee Flat 
Base of basaltic cap at Sugar Loaf . 
Top of highest bank at Spring Valley mines 
Top of pink gravel, below Sugar Loaf : 
Low bed-rock near blacksmith shop in Spring Valley mines. 
Cherokee Flat, Spring Valley House, second story . 
Bed-rock at St. Clair Flat . 
Top of first bench above Welch’s diggings 
