PREFACE.

Bulletin 20, designed for the use of those interested in the discovery of gold-
bearing lode deposits, is being published as a series of separate parts. Part I. is to
contain information about lode-gold production in British Columbia as a whole, and
will be accompanied by a map on which the generalized geology of the Province is rep-
resented. The approximate total production of each lode-gold mining centre, exclusive
of by-product gold, is also indicated on the map. Each of the other parts deals with
a major subdivision of the Province, giving information about the geology, gold-bearing
lode deposits, and lode-gold production of areas within the particular subdivision. In
all, seven parts are proposed :—

Part I.—General ve Lode-gold Production in British Columbia.

Part II.—South-eastern British Columbia.

Part I]J.—Central Southern British Columbia.

Part IV.—South-western British Columbia, exclusive of Vancouver Island.

Part V.—Vancouver Island.

Part VI.—North-eastern British Columbia, including the Cariboo and Hobson
Creek Areas.

Part VII.—North-western British Columbia.

By kind permission of Professor H. C. Gunning, Department of Geology, Uni-
versity of British Columbia, his compilation of the geology of British Columbia has
been followed in the generalized geology represented on the map accompanying Part I.
Professor Gunning’s map was published in ‘“ The Miner,’”’ Vancouver, B.C., June—July,
1943, and in ‘‘ The Northern Miner,” Toronto, Ont., December 16th, 1943.

Part VI. was revised in November, 1946.