The "Rocky Mountains" is not the representation of an actual scene, but a typical composition, and, thus regarded, is an interesting work, although it seems to us somewhat too theatrical, and scarcely true in some of the details. Local truth is desirable in topographical art, although of quite secondary importance in compositions of a more ideal character. Since then this artist has executed a number of similarly ambitious paintings of our Western scenery, including a colossal painting of the gorge of the Yosemite Valley. All of them are characterized by boldness of treatment, but sometimes they are crude in color and out of tone. Of these we prefer, as least sensational and most artistically correct, the painting of a storm on Mount Rosalie. Bierstadt's smaller California scenes are generally more valuable than his large ones for artistic quality: one of the best compositions we have seen from his easel is a war sketch representing Federal sharp-shooters on the crest of a hill behind some trees. This is an excellent piece of work, fresh, original, and quite free from the Düsseldorf taint; and confirms us in the opinion that Mr. Bierstadt is naturally an artist of great ability and large resources, and might easily have maintained a reputation as such if he had not grafted on the sensationalism of Düsseldorf a greater ambition for notoriety and money than for success in pure art. [Illustration: "VIEW ON THE KERN RIVER"--[A. BIERSTADT.]] Some of the qualities we have learned to look for in vain in the canvases of Bierstadt we find emphasized in the paintings of Thomas Hill, who succeeded him as court painter to the monarch of the Rocky Mountains. Hill began life as a coach-painter at Taunton, Massachusetts. After deciding on a professional art career, he visited Europe, and benefited by observation in foreign studios, especially of France, although his style is essentially his own. His method of using pigments is sometimes open to the accusation of hardness; there is too often a lack of juiciness--a dryness that seems to remind us of paint rather than atmosphere, which may be owing to the fact, as I have been informed, that he uses little or no oil in going over a painting the second time. But Mr. Hill is a good colorist, bold and massive in his effects, and a very careful, conscientious student of nature. He has been happy in the rendering of wood interiors, as, for example, bits from the Forest of Fontainebleau. One of his most remarkable New England landscapes represents the avalanche in the Notch of the White Mountains, which was attended with such disastrous results to the dwellers in the valley. But Mr. Hill will be identified in future with California, where he has become a resident, and has devoted his energies to painting some of the magnificent scenery of that marvellous region, where the roar of the whirlwind and the roll of the thunder reverberate like the tread of the countless millions who evermore march to the westward.