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A preface is useful, if it be useful at all, in convey ing to the reader some fuller notion of the nature of the book he holds in his hand than the brevity of the title page permits, so that he may have guidance as to whether it be worth his reading or not. This book, then, while quite complete in itself, is written as supplement and complement to Ten Thou sand Miles with a dog-sled, and forms therewith a survey of the interior of Alaska under the totally differ ent aspects of winter and summer. In winter one travels with the dog team almost wherever one wishes; summer travel is confined to the waterways with which interior Alaska is so liberally supplied; so that a book on river voyages may really deal with the whole country so far as the summer is concerned.
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