California mines and minerals . the conditions existing in gold, copper, quicksilver, petroleum, and all the various branchesof mining. It also publishes maps of the counties which show the location of all mines, roads, streams, etc. TheBureau is in charge of a State Mineralogist, who has a corps of trained Field Assistants, and an office force as is a fine technical library, and a very large museum showing specimens of all mineral products, suitablyarranged for reference. There is also a well-equipped laboratory for the determination of minerals. The Bureau publishes, among other t
California mines and minerals . the conditions existing in gold, copper, quicksilver, petroleum, and all the various branchesof mining. It also publishes maps of the counties which show the location of all mines, roads, streams, etc. TheBureau is in charge of a State Mineralogist, who has a corps of trained Field Assistants, and an office force as is a fine technical library, and a very large museum showing specimens of all mineral products, suitablyarranged for reference. There is also a well-equipped laboratory for the determination of minerals. The Bureau publishes, among other things, an annual Statistical Bulletin showing by counties the output andvalue of all substances mined or quarried in California. From the latest bulletin of this character, covering thecalendar year 1907, figures and tables given in this pamphlet are taken, in the belief that they will give the bestidea of what the mines of the State are producing and what the miners are accomplishing. I UNi\£KSiTY 01- CALIFORNIADAVIS. FERRY BUILDING, SAN FRANCISCO. ONK HALF THE UPPER FLOOR OF WHICH IS OCCUPIED BY THE STATE MINING BUREAU.(This building is constructed of Colusa sandstone and tlie reconstructed tower is of reinforced concrete.) CALIFORNIA STATE MINING BUREAU. This iustitutiou aims to l;e the chief source of reliable information about the mineral resources and miningindustries of California. It is encouraged in its work by the fact that its publications have been in such demand that large editions aresoon exhausted. In fact, copies of them now command high prices in the market. The publications, as soon as issued, find tlieir way to the scientific, public, and private libraries of all countries. STATE MINERALOGIST. Tlie California State ^Mining Bureau is under the supervision of a State ^Mineralogist and Board of Trustees. It is supported by legislative appropriations, and in some degree performs work similar to that of the geologicalsurveys of other states, but its purpo
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