DURAND, N. A.--Mr. DURAND has contributed largely to the present exhibition, in every sense of the word. His most prominent production is No. 36, 'The Solitary Oak.' For an exhibition-picture, perhaps it is not so striking as some of his previous works; yet it will bear examination better. Without any effort at warmth of color, it has that glow of sunlight which it is so difficult to express. A veteran tree, standing alone upon a gentle eminence, stretching forth its giant arms, that have withstood the storms of centuries, is truly a noble subject for an artist of Mr. DURAND'S reputation; and most truly has he depicted it. The distance is beautiful, and the introduction of cattle seeking their evening shelter gives an interest seldom to be found in works of this class. Should we attempt to find a fault, it would be the want of a little more warmth and clearness in the dark parts of the fore-ground. No. 134, another charming landscape; true to nature, of a silvery tone, and most exquisite sweetness of color and delicacy of touch. Nos. 181 and 258 are two careful studies from nature, wherein special care has been given to the trunks of trees, a feature in landscape-painting upon which sufficient attention is rarely bestowed. No. 244, 'Emigrant Family,' is full of interest. The travelling family are encamped under the shade of the trees, and the kettle hung over the fire shows that they are evidently preparing to refresh themselves for farther toil and journeying. The foliage of the trees is elaborately executed; the distance is well preserved; and the whole possesses great truth to nature; perhaps however, like all '_green_' pictures, it is less attractive in an exhibition than works of a warmer color. No. 163, 'Portrait of a Gentleman,' has great force, and shows the artist's versatility of genius.