_J. C. Dahl_ taught as professor in the Academy of Dresden. At the present time his Norwegian landscapes seem exceedingly old-fashioned, but in the thirties they evidently must have been something absolutely new, for they raised a hue and cry amongst the German painters as "the most wild naturalism." In 1788 Johann Christian Clausen Dahl was born in Bergen. He was the son of one of those Norwegian giants who are one day tillers of the soil and on the morrow fishers or herdsmen and hunters, who cross the sea in their youth as sailors and clear the waste land when they return home. As he wandered with his father through the dense, solitary pine forests, along abrupt precipices, sullen lakes, rushing waterfalls, silvery shining glaciers, the majesty of Northern nature was revealed to him, and he rendered them in little coloured drawings, which, in spite of their awkward technique, bear witness to an extraordinary freshness of observation. The course of study at the Copenhagen Academy, whither he proceeded in his twentieth year, enabled him to become acquainted with Everdingen and Ruysdael, and these two old masters, who had also painted Norwegian landscapes, stimulated him to further efforts. Dahl became the first representative of Norwegian landscape painting, and remained true to his country even when in 1819 he undertook a professorship in Dresden. Italy and Germany occupied his brush as much as Norway, but he was only himself when he worked amongst the Norwegian cliffs. Breadth of painting and softness of atmosphere are wanting in all his pictures. They are hard and dry in their effect, and not seldom entirely conventional; especially the large works painted after 1830. In them he gave the impression of a bewildering, babbling personality. They have been swiftly conceived and swiftly painted, but without artistic love and fine feeling. In his later years Dahl did not allow himself the time to bury himself in nature quietly and with devotion, and finally--especially in his moonlight pictures--took to using a violet-blue, which has a very conventional effect. Everdingen sought by preference for what was forceful and violently agitated in nature; Ruysdael felt an enthusiasm for rushing mountain streams. But for Dahl even these romantic elements of Northern nature were not enough. He approached nature, not to interpret her simply, but to arrange his effects. In his picture the wild Norwegian landscape had to be wilder and more restless than in reality it is. Not patient enough to win all its secrets from the savage mountain torrent, he forced together his effects, made additions, brought confusion into his picture as a whole, and a crudeness into the particular incidents. His large pictures have a loud effect contrasted with the simple intuition of nature amongst the Netherlanders. Many of them are merely fantastically irrational compositions of motives which have been learned by heart.