As will have been observed, the type from which the WITNESS is printed when in the turtles assumes a rounded shape. Readers of that paper know that on many occasions it is embellished with wood cuts, and that wood engravings are ordinarily cut on a flat surface. They may have wondered how the difficulty is got over. In the WITNESS all the engravings are electrotyped. To perform this operation an impression of the engraving is first made in a sheet of wax by means of a powerful press. The wax is so fine and the pressure so great that the finest lines are reproduced. The wax is then blackleaded with graphite, made especially fine for the purpose, and the waxen plate is inserted in an battery in which is a strong solution of copper. In a few hours a thin film of copper, the exact counterpart of the engraving, is formed. This is laid on its face in a hot iron pan and over the back a covering of tin foil is placed to give it consistency, the heat causing it to melt and fill all the finer interstices of the engraving. Over this again is poured a "backing" of lead or type metal, which is shaved down to the exact thickness required. This is again backed with wood, to raise it to the height necessary for printing. This wood has been curved to the shape of the press and the electrotype is bent to correspond. Some papers stereotype the whole form--a shorter process, but one impracticable for an afternoon paper in editions, as, in the latter case, even fifteen minutes' delay would be more than could be spared.