Gold Mining Notes. 
EXTRACTED FROM THE 2ND, 4.TH, 5TH AND 6TH ANNUAL REPORTS OF THE 
STATE MINERALOGIST OF CALIFORNIA.* 
By G. H. Haiatayne, C.M.G., F.R.G.S. 
WISH to explain that my name appears in 
connection with the following extracts from 
the Reports of the State Mineralogist of 
California, simply because the Editor of Timehri asked 
me to transcribe or condense such portions of those 
reports as might be useful to its readers, and while 
wishing that he had selected some more practised and 
competent " devil," I shall be glad if the result of my 
task is to communicate some of the useful or interesting 
information contained in these reports to those employed 
in developing what, it is to be hoped, will before long 
prove a source of abundant wealth to our colony and its 
people. 
According to the remarks on the geology of gold 
contained in the reports, there is reason to believe that 
the heaviest metals exist in the largest quantities near 
the centre of the earth. They exist much disseminated 
* These reports which treat in detail of many mineralogical questions 
of general importance and more especially of gold mining, have been 
forwarded to the Society by the State Mining Bureau of California, 
through Mr. Henry S. Durden, with whom an exchange of samples of 
colony woods had been made for Californian ores and minerals. The 
ores and minerals are exhibited in the Museum ; and the reports are 
deposited in the Reading Room, where they are available for consultation 
by those who desire a more detailed acquaintance than can be obtained 
from the following notes most kindly prepared by Mr. Hawtayne. — Ed. 
