A Manual Of Photography

103 1852.] 2727. 2728. 2729. 2730. 2731. 2732. 2733. 2734. 2735. 2736. 2737. 2738. 2739. 2740. 2741. 2742. 2743. 2744. 2745. GRIFFIN'S SCIENTIFIC CIRCULAR. 2725 Apparatus for Resilvering Daguerreotype Plates by Electro-plating, consisting of a Smee’s Battery, glass decomposition cell and connecting wire, witli the requisite binding-screws:—for silvering plates of any size up to 4^ inches by 3|inches. Price 12s. 6c?. 2726. Silver solution, for electro-plating Daguerreotype plates, per oz. 2s. Two ounces of this solution, diluted with 18 ounces of water, form a pint of solution of the proper strength for electro-plating. Full instructions for Electro-Plating, &c will be found in Napier’s Electro- metallurgy, just published, forming Vol. XIV. of the new edition of tJ pædia Metropolitana.” Price 3s. 6^. 2732. Plate-holder, French pattern, for securing the plates firmly and con- veniently (fig. 2686 6 e), with clamp, for No. 2/78 plates, 3s. 64. Plate-holder, for No. 2779 plates, 3s. 6c?. Plate-holder, for No. 2780 plates, 3s. 6e?. | Plate-holder, for No. 2781 plates, 5s. Plate-holder, for No. 2782 plates, 6s. Apparatus for bending the edges of Daguerreotype plates, so as to prevent the sharp edges cutting the buffers in buffing. 1 rice 9s. Hand-buffs, covered with leather or velvet, small size (fig. 2686 i), per pair, in box, 9s. Hand-buffs, full size (fig. 2686 i), per pair, in box, 12s. FiNELY-CARDED Cotton-wool, freed from grease, &c., price 3c?. per oz. Fixing Stand, with iron foot and levelling screws, for supporting the plates while fixing (fig. 2686 g), for plates up to 4± inches by 3|inches, 5s. 6c?. Ditto for plates up to 8^ inches by 6f inches, 6s. Apparatus for drying Daguerreotype Plates, consisting of a flat-shaped copper vessel, tinned inside ; a holder for the plate, and a support (fig. 2738), 3 sizes :— For plates up to 4^ inches by 3£ inches, 7s. For plates up to 6Z inches by 4|inches, 9s. For plates up to 8 ^ inches by 6| inches, 10s. 6d. Glass Funnel, for filtering the fixing solution, 2 inches in diameter, 4c?. Circular Filters to suit the funnel, cut ready for use. The packet of 100, 7d. Steel Pliers for holding the plates whilst drying off, 2s. Parallel Mirror, mounted in brass, for attaching to the front of the lenses when portraits, views, &c., are required to be taken in direct instead of reversed positions by the Daguerreotype process, 2 sizes :— Mirror 2^ inches by 3 inches, mounted in brass, 2/. Mirror,' 4 inches by 3 inches, mounted in brass, 3?.