It does not seem as if the band or endless saw should render the same services in sawing stone as in working wood and metals, for the reason that quite a great stress is necessary to cause the advance of the stone (which is in most cases very heavy) against the blade. Mr. A. Auguste, however, has not stopped at such a consideration, or, better, he has got round the difficulty by holding the block stationary and making the blade act horizontally. Fig. 1 gives a general view of the apparatus; Fig. 2 gives a plan view; Fig. 3 is a transverse section; Fig. 4 is an end view; Figs. 5, 6, and 7 show details of the water and sand distributer; and Figs. 8, 9, and 10 show the pulleys arranged for obtaining several slabs at once. [Illustration: FIG. 1 AUGUSTE'S STONE SAW.] [Illustration: FIG. 2 AUGUSTE'S STONE SAW.] [Illustration: FIGS. 3 and 4 AUGUSTE'S STONE SAW.] [Illustration: FIGS. 5 through 10 AUGUSTE'S STONE SAW.] The machine is wholly of cast iron. The frame consists of four columns, A, bolted to a rectangular bed plate, A', and connected above by a frame, B, that forms a table for the support of the transmission pieces, as well as the iron ladders, _a_, and the platform, _b_, that supports the water reservoirs, C, and sand receptacles, C'. Between the two columns at the ends of the machine there are two crosspieces, D and D', so arranged that they can move vertically, like carriages. These pieces carry the axles of the pulleys, P and P', around which the band saw, S, passes. In the center of the bed plate, A', which is cast in two pieces connected by bolts, there are ties to which are screwed iron rails, _e_, which form a railway over which the platform car, E, carrying the stone is made to advance beneath the saw. The saw consists of an endless band of steel, either smooth or provided with teeth that are spaced according to the nature of the material to be worked. It passes around the pulleys, P and P', which are each encircled by a wide and stout band of rubber to cause the blade to adhere, and which are likewise provided with two flanges. Of the latter, the upper one is cast in a piece with the pulley, and the lower one is formed of sections of a circle connected by screws. The pulley, P, is fast, and carries along the saw; the other, P', is loose, and its hub is provided with a bronze socket (Figs. 1 and 4). It is through this second pulley that the blade is given the desired tension, and to this effect its axle is forged with a small disk adjusted in a frame and traversed by a screw, _d'_, which is maneuvered through a hand wheel. The extremities of the crosspieces, D and D', are provided with brass sockets through which the pieces slide up and down the columns, with slight friction, under the action of the vertical screws, _g_ and _g'_, within the columns.