=Mr. Dielman’s Mosaics.=--Mr. Dielman’s mosaic panels are of the same size and shape, each being seven and a half feet wide and three feet seven inches high. They were executed in Venice, which for generations has been celebrated for the delicacy, accurate coloring, and nicety of fitting, of its mosaics. The process and methods used in this work are much the same as in the ordinary sorts of mosaic--such as would be required for a ceiling, for example--although, of course, the pieces, or _tesseræ_, must be fitted with much greater care and patience, so that every piece may take its place in a perfect gradation of color. The work of the painter consisted in making full size cartoons in the exact colors desired in the mosaic; from these the Italian workmen prepared the finished panels, and sent them to this country ready to be put in place. The cartoons, however, were necessarily painted as much as possible in simple outlines and shades of color, for, although the Italian shops are said to have at their command enamels of no less than twenty-five thousand different tints, it would be obviously impossible with such a material to reproduce exactly every variation of tone and line of which the brush is capable. Certain refinements of technique, therefore, and more especially the vagueness of color which is often so desirable in the painted canvas, must be avoided in a cartoon made for such a purpose as Mr. Dielman’s. [Illustration: HISTORY.--BY FREDERICK DIELMAN.] The mosaic at the north end of the room represents _Law_, typified by a young and beautiful woman seated on a massive marble throne and holding in one hand a sword with which to chastise the guilty, and in the other a palm branch with which to reward the meritorious. Her head is surrounded by a glory, and she wears on her breast the Ægis of Minerva to signify that she is clad in the armor of righteousness and wisdom. On the steps of her throne are the scales of Justice and the book of Law, and a pair of white doves emblematic of mercy. The visitor will notice that Mr. Dielman’s conception of Law includes the conventional typification of Justice, but at the same time slightly differs from it. The reason is that he has wished to indicate not only the judicial but the legislative side of Law; hence the freer air of command, and, in particular, the outdoor landscape of woods and hills, signifying a less restricted authority than that of the courtroom. Such a typical symbol of Justice as the scales is less conspicuously introduced, and the usual globe is entirely omitted.