It was a new kind of realism that had nothing to do with photographic reproduction of details. It was a professedly psychological study that had about as much in common with the old-fashioned conceptions of man's mental activities as the delirious utterances of a fever patient. It was life, but presented in the Impressionistic temper of a Gauguin or Cezanne. On the appearance of the completed novel in 1890, Hamsun was greeted as one of the chief heralds of the neo-romantlc movement then spreading rapidly through the Scandinavian north and finding typical expressions not only in the works of theretofore unknown writers, but in the changed moods of masters like Ibsen and Bjornson and Strindberg.

It was followed two years later by "Mysteries," which pretends to be a novel, but which may be better described as a delightfully irresponsible and defiantly subjective roaming through any highway or byway of life or letters that happened to take the author's fancy at the moment of writing. Some one has said of that book that in its abrupt swingings from laughter to tears, from irreverence to awe, from the ridiculous to the sublime, one finds the spirits of Dostoyevski and Mark Twain blended.

The novels "Editor Lynge" and "New Earth," both published in 1893, were social studies of Christiania's Bohemia and chiefly characterized by their violent attacks on the men and women exercising the profession which Hamsun had just made his own. Then came "Pan" in 1894, and the real Hamsun, the Hamsun who ever since has moved logically and with increasing authority to "The Growth of the Soil," stood finally revealed. It is a novel of the Northland, almost without a plot, and having its chief interest in a primitively spontaneous man's reactions to a nature so overwhelming that it makes mere purposeless existence seem a sufficient end in itself. One may well question whether Hamsun has ever surpassed the purely lyrical mood of that book, into which he poured the ecstatic dreams of the little boy from the south as, for the first time, he saw the forestclad northern mountains bathing their feet in the ocean and their crowns in the light of a never-setting sun. It is a wonderful paean to untamed nature and to the forces let loose by it within the soul of man.

Like most of the great writers over there, Hamsun has not confined himself to one poetic mood or form, but has tried all of them. From the line of novels culminating in "Pan," he turned suddenly to the drama, and in 1895 appeared his first play, "At the Gates of the Kingdom." It was the opening drama of a trilogy and was followed by "The Game of Life" in 1896 and "Sunset Glow" in 1898. The first play is laid in Christiania, the second in the Northland, and the third in Christiania again. The hero of all three is Ivar Kareno, a student and thinker who is first presented to us at the age of 29, then at 39, and finally at 50. His wife and several other characters accompany the central figure through the trilogy, of which the lesson seems to be that every one is a rebel at 30 and a renegade at 50. But when Kareno, the irreconcilable rebel of "At the Gates of the Kingdom," the heaven-storming truth-seeker of "The Game of Life," and the acclaimed radical leader in the first acts of "Sunset Glow," surrenders at last to the powers that be in order to gain a safe and sheltered harbor for his declining years, then another man of 29 stands ready to denounce him and to take up the rebel cry of youth to which he has become a traitor. Hamsun's ironical humor and whimsical manner of expression do more than the plot itself to knit the plays into an organic unit, and several of the characters are delightfully drawn, particularly the two women who play the greatest part in Kareno's life: his wife Eline, and Teresita, who is one more of his many feminine embodiments of the passionate and changeable Northland nature. Any attempt to give a political tendency to the trilogy must be held wasted. Characteristically, Kareno is a sort of Nietzschean rebel against the victorious majority, and Hamsun's seemingly cynical conclusions stress man's capacity for action rather than the purposes toward which that capacity may be directed.

Of three subsequent plays, "Vendt the Monk," (1903), "Queen Tamara" (1903) and "At the Mercy of Life" (1910), the first mentioned is by far the most remarkable. It is a verse drama in eight acts, centred about one of Hamsun's most typical vagabond heroes. The monk Vendt has much in common with Peer Gynt without being in any way an imitation or a duplicate. He is a dreamer in revolt against the world's alleged injustice, a rebel against the very powers that invisibly move the universe, and a passionate lover of life who in the end accepts it as a joyful battle and then dreams of the long peace to come. The vigor and charm of the verse proved a surprise to the critics when the play was published, as Hamsun until then had given no proof of any poetic gift in the narrower sense.

From 1897 to 1912 Hamsun produced a series of volumes that simply marked a further development of the tendencies shown in his first novels: "Siesta," short stories, 1897; "Victoria" a novel with a charming love story that embodies the tenderest note in his production, 1898; "In Wonderland," travelling sketches from the Caucasus, 1903; "Brushwood," short stories, 1903; "The Wild Choir," a collection of poems, 1904; "Dreamers," a novel, 1904; "Struggling Life," short stories and travelling sketches, 1905; "Beneath the Autumn Star" a novel, 1906; "Benoni," and "Rosa," two novels forming to some extent sequels to "Pan," 1908; "A Wanderer Plays with Muted Strings," a novel, 1909; and "The Last Joy," a shapeless work, half novel and half mere uncoordinated reflections, 1912.

The later part of this output seemed to indicate a lack of development, a failure to open up new vistas, that caused many to fear that the principal contributions of Hamsun already lay behind him. Then appeared in 1913 a big novel, "Children of the Time," which in many ways struck a new note, although led up to by "Rosa" and "Benoni." The horizon is now wider, the picture broader. There is still a central figure, and still he possesses many of the old Hamsun traits, but he has crossed the meridian at last and become an observer rather than a fighter and doer. Nor is he the central figure to the same extent as Lieutenant Glahn in "Pan" or Kareno in the trilogy. The life pictured is the life of a certain spot of ground--Segelfoss manor, and later the town of Segelfoss--rather than that of one or two isolated individuals. One might almost say that Hamsun's vision has become social at last, were it not for his continued accentuation of the irreconcilable conflict between the individual and the group.

"Segelfoss Town" in 1915 and "The Growth of the Soil"--the title ought to be "The Earth's Increase"--in 1918 continue along the path Hamsun entered by "Children of the Time." The scene is laid in his beloved Northland, but the old primitive life is going--going even in the outlying districts, where the pioneers are already breaking ground for new permanent settlements. Business of a modern type has arrived, and much of the quiet humor displayed in these the latest and maturest of Hamsun's works springs from the spectacle of its influence on the natives, whose hands used always to be in their pockets, and whose credulity in face of the improbable was only surpassed by their unwillingness to believe anything reasonable. Still the life he pictures is largely primitive, with nature as man's chief antagonist, and to us of the crowded cities it brings a charm of novelty rarely found in books today. With it goes an understanding of human nature which is no less deep-reaching because it is apt to find expression in whimsical or flagrantly paradoxical forms.

Hamsun has just celebrated his sixtieth birthday anniversary. He is as strong and active as ever, burying himself most of the time on his little estate in the heart of the country that has become to such a peculiar extent his own. There is every reason to expect from him works that may not only equal but surpass the best of his production so far.