These machines are so excellently and clearly described in the Messrs. Hoe’s illustrated catalogue, beautifully got up for the use of their customers, that we cannot do better than extract their words as more plain and comprehensible than any we could readily substitute for them, we therefore give them as below, without doubt or hesitation: “The Double Cylinder Printing Machine. In its arrangement this press is similar to the Single _Small_ Cylinder Machine; except that it has two impression cylinders each alternately giving an impression from the same form. The sheets are supplied by two attendants, and, if required to print short editions of various sizes, it will be necessary to have a boy at each end of the press to receive the printed sheets, but where large editions or forms of uniform size are worked, not requiring frequent changes of the tape-wheels, the self-sheet-flying apparatus is very efficient and economical, placing the printed sheets in heaps with precision, and dispensing entirely with the two boys otherwise required for that purpose. “The large amount of printing ordinarily done on these presses, and the consequent speed required, have rendered necessary greatly increased strength and weight of material in all the parts, together with simplicity in the mechanical arrangements, and the utmost perfection of workmanship. The noise and annoyance occasioned by the concussion of the bed against the springs, which are placed at each end of the machine to overcome the momentum of the bed, has been removed by means of adjustable India rubber buffers placed at the points of contact, which in no way interfere with the lively and certain action of the spiral springs. “Each Machine is furnished with Roller Moulds, two sets of Roller Stocks, Blankets and Band; also, Fly Wheel and Stand, if to be driven by _hand_ power; or Counter Shaft, two hangers and Pulley, if by _steam_ power. “The Patent Single Small Cylinder Printing Machine. In this press the form of types is placed upon a flat bed, and the impression taken upon the paper by means of a cylinder, while the form is passing under it. The small size of the cylinder allows the machine to be constructed in a very compact manner, so as to shorten the distance which the bed travels, thereby considerably increasing the number of impressions in a given time, beyond the single _large_ cylinder press. “The machine is of convenient height for use. One person only is required to feed down the paper, whose position is but a step from the floor. It will give from 2,000 to 3,000 impressions per hour, with perfect safety to the machinery. The printed sheets are thrown out by a fly frame in a uniform pile. Register sufficiently accurate for newspaper and job work is obtained by the patent feed guides, which are attached to each press. When required, a registering or pointing apparatus is furnished, and the press may then be used advantageously for book work. [Illustration: =CARPENTER’S SHOP.=]