The Arctic Odyssey of Diamond Jenness, presented here with the immediacy and humanity of a private journal, simply could not now happen. That Arctic world of 1913-165 no longer exists. Its climate and geography remain, but the people, their ways of living, feeling, thinking, believing, and behaving, vanished and are now only lost, vague memories in a few, very old minds. For such reasons, JennessO Arctic journal holds vital content. It provides us insight at ground level of his long, tough voyage of discover, so that anyone interested in Arctic America or Canadian studies will find this journal a rare and enriching experience. Further, for Arctic scholars, this journal presents the detailed context for those pioneer monographs that launched the career of young Jenness and led to his becoming CanadaOs preeminent anthropologist.