Mr. Rutstrum has authored a number of books on the joys of Northern wilderness solitude and vicissitudes and again he invites us to trek along. Leading up to the how-tos are tales of exhilarating thoughts while observing the sweep of snow and stars. Mr. Rutstrum takes particular delight in telling what was actually a rescue of two city slickers by dog sled into civilization, and the sad realization of his former charges that they had left Paradise (below zero) and would probably never return. From his experience, the author supplies strictures and advice for Arctic and outpost travel and camping: equipment, dog sledding, clothing, setting up camps, foot and sled transportation, etc. And among Mr. Rutstrum's hearty general advice--take a substantial walk (upwards of five miles) every day in winter, wear woollen longies. Incidental intelligence: most prefer ""Whoit!"" to ""Mush!"" and ""Mush!"" is a corruption of the French ""Marche!"" A practical guide for the winter hiker anywhere, and a ""whoit!"" for the sale of woollen longjohns.