The nature of this invention consists in making moulds for stereotyping of India-rubber, or gutta-percha, by mixing the gums with the metallic or earthy substances, and by expelling all air from the mould while it is being filled, to render the cast in all respects perfect. (The process would require too lengthy a description for this report.) The “claim” is the process of expelling air from the surface of the type when forming the mould, and from the surface of the mould when forming the plate. Also the method of dressing, levelling, or thickening the moulds and plates, when made of any compounds that run, so that all plates made shall be invariably of the same thickness. _Seventy-fifth_, to Lenardo Westbrook, of New York City, July 19, 1853. For Gutta-percha Stereotype Composition. An improvement on the patent of Josiah Warren, dated April 25, 1846, first, the compound described, of shellac, plumbago or graphite, asphaltum and gutta-percha, treated by sulphate of copper and water, as described, as a substitute for type metal. _Seventy-sixth_, to H. L. Novis, (Assigner to S. T. Armstrong) New York City, July 26, 1853. Patented in England, February 24, 1853, and in France, March 13, 1853. For preserving India-rubber in the liquid state. Mr. Novis claims the compound, consisting of the native juice of the caoutchouc, with aqua ammonia or the equivalent thereof, as set forth, when said ammonia or its equivalent is mixed with said juice of the caoutchouc in a liquid state, by means of which, the juice above named is preserved for a great length of time, and can be manufactured at less expense than the India-rubber of commerce, which is mixed with other foreign substances. And I also claim the solid elastic article when manufactured from the said composition of matter as described. _Seventy-seventh_, to John Chilcott, and Robert Snell, New York, September 13, 1853. For improvement in the manufacture of Boots and Shoes. The sole is made of three parts, viz., the India-rubber sole, a leather lining, and a leather border, or edge. The India-rubber sole is made smaller than the sole it is intended to cover, and its edges are bevelled off thin all around; the leather lining is of the full size of the bottom of the boot or shoe, and united to the upper side of the India-rubber sole by water-proof adhesive material, leaving a margin of the lining all around the edge of the India-rubber sole; the leather border or edge is of the same thickness as the India-rubber sole, and overlaps the bevelled portion of it, and is also bevelled so thin that its outer face will be level with the outer face of the India-rubber. A solid sole is thus made of uniform thickness, which may be secured to a boot or shoe, by sewing, cementing, or pegging.