Hamsun was twenty-nine when he finished “Hunger,” and that was the age given to one after another of his central figures. Glahn is twenty-nine, of course, and so is the Monk Vendt. With Hamsun that age seemed to stand principally for the high water mark of passion. Because of the fire burning within themselves, his heroes had the supreme courage of being themselves in utter defiance of codes and customs. Because of that fire they were capable of rising above everything that life might bring--above everything but the passing of the life-giving passion itself. A Glahn dies, but does not grow old. Life insists on its due course, however, and in reality passion may sink into neurasthenia without producing suicides. Ivar Kareno discovers it in “Sunset Glow,” when, at the age of fifty, he turns renegade in more senses than one. But even then his realization could not be fully accepted by the author himself, still only thirty-eight, and so Kareno steps down into the respectable and honoured sloth of age only to be succeeded, by another hero who has not yet passed the climacteric twenty-ninth year. Even Telegraph-Rolandsen in “Dreamers” retains the youthful glow and charm and irresponsibility that used to be thought inseparable from the true Hamsun character. It is therefore with something of a shock one encounters the enigmatic Knut Pedersen from the Northlands, who has turned from literature to tramping, who speaks of old age as if he had reached the proverbial three-score and ten, and who time and again slips into something like actual whining, as when he says of himself: “Time has worn me out so that I have grown stupid and sterile and indifferent; now I look upon a woman merely as literature.” The two volumes named “Under the Autumn Star” and “A Wanderer Plays on Muted Strings” form an unbroken cry of regret, and the object of that regret is the hey-day of youth--that golden age of twenty-nine--when every woman regardless of age and colour and caste was a challenging fragment of life.