The mineral industry of Califo r nia / C.G. Yale -- The mother lode of Califo r nia / R.E. Browne -- Electric power on the Pacific coast / A.M. Hunt a nd W. Meredith -- Notes on dredging fo r gold / R.H. Postlethwaite -- Deep mining at the Utica / J.H. Collier, jr. -- The genesis of petroleum a nd asphaltum in Califo r nia / A.S. Cooper -- Fineness of Califo r nia gold / F.A. Leach -- Petroleum in Califo r nia / W.L. Watts -- The copper resources of Califo r nia / M.M. O'Shaughnessy -- The use of machine drills in stoping / B.L. Thane -- A new fo r m of sco r ifier / E.H. Simonds -- The College of Mining, University of Califo r nia / S.B. Christy -- Mining debris legislation / C.G. Yale -- Nevada County -- Mineral resources of Butte County / A. Ekman -- Placer County's mining sto r y / I.H. Parker -- El Do r ado County's mines -- Amado r County's mines / W.H. Sto r ms