The results of Mr. Tilton's labors since the summer in the Alps prove that such was the effect upon him. His pictures have of late occupied nearly every class of Landscape Art. The works now wrought in his Roman studio are indicative of great changes in feeling, and are marked by surprising improvements in execution. Yet the individuality of the artist is impressed upon every canvas. The changes to which we refer are these,--foregrounds suggested by or painted from living forms. In one view of Nemi we saw a superb black, gold, and crimson butterfly resting on a flower. Yet these foregrounds require more strength, more "body," more of that which artists achieve who achieve nothing else. We notice far more individualism in tree forms. The ideal tree, that is, the tree as it should be, and the conventional one coming against the sky on one side of the composition, the one bequeathed by Claude, have given place to Nature's homelier types. The question as to the meaning of passages no longer arises. The lines are drawn with a decision, with a sense of certainty, raising them above all doubt. In the rendering of distant mountains, Mr. Dillon evinces new knowledge of what such forms necessarily imply,--their tendency to monotone and to flatness, yet preserving all their essential surface markings, and their inevitable cutting outline against the sky,--which sharpness Mr. Tilton as yet has only hinted at, not represented. Positive edges are the true.--But we have no further space to devote to these particulars of landscape form. In these Mr. Tilton has many rivals and not a few superiors.