EXPLANATORY PREFACE Tue Cassiar Land District occupies the north-west section of British Columbia and has an area of about one hundred thousand square miles. It is bounded to south and east by the Range, Cariboo and Peace River Land Districts, to the north by the Yukon and to the west by the Alaskan “Panhandle,” a strip of American territory that separates it from the Pacific Ocean. There are comparatively settled districts lying both to north and south; but the Cassiar, in common with the adjacent sections of the Yukon Territory and north-eastern British Columbia, is known only to seekers of mineral, fur and big game. The rugged nature of the country and the lack of a sufficient incentive toward its development have so far combined to prevent the encroachments of the civilized world. There is no literature about the Cassiar, unless one admits as such the reports of government officials and mining engineers. Large tracts of it are still unmapped or but vaguely indicated, and even the Indians display ignorance concerning certain dis- tricts. Dr. George Mercer Dawson’s report of 1887 (Geological Survey of Canada) is still recognized as vu