Allen & Needles, 41 South Water street, Philadelphia, Manufacturers of Allen's Patent Anti-Lamina, for removing and preventing Scale in steam boilers. All Parties having any article to sell through an agent, address, with circular, etc., Box 499 Oil City, Pa. Manufacturers of Tag Holders will please send address to Box 1019, St. Paul, Minn. Manufacturers of Presses for making Castor Oil, address or send circular to F.M. Peck, P.O. Box 190, Montgomery, Ala. Manufacturers of Cotton-Spinning and Knitting Machinery send circular and price list to W.L. Jones, Holly Springs, Miss. Dr. W. Spillman, Marion Station, Miss., wishes to correspond with manufacturers of buckshot or bullets, either conical or spherical. Toy Makers--One-half of Patent Right of Toy Wind Wheel given away! Address Dr. W.H. Benson, Norfolk, Va. Milton Darling, East Macdonough, Chenango Co., N.Y., wishes the address of those that want broom handles for the year 1868. A.B. Woodbury, Winchester, N.H., wants to sell two valuable patents--Jack-Spinning Improvements. E.C. Tainter, Worcester, Mass., wants to sell a good set of Sash and Door Machinery, used only six months. Parties desiring any of their new ideas put into practical form, or wanting any new apparatus invented for manufacturing purposes, etc., address, with confidence, A.E.W., Inventor and Draftsman, 114 Fulton street, N.Y. References given. * * * * * MANUFACTURING, MINING, AND RAILROAD ITEMS. For the benefit of the Union Pacific railroad, the base of the Rocky Mountains has been fixed at the base of the Black Hills, a distance of 6.637 miles west of Cheyenne, and, according to the railway surveys 525.078 miles from Omaha. The Pittsburg, Fort Wayne and Chicago railway have just rebuilt in the most permanent manner an iron bridge over the Alleghany river, to replace the old wooden Howe truss bridge, which had become inadequate to the increasing traffic. The new bridge opens like a fan towards the freight yard at Pittsburg being at the narrowest part, next to the main span 55 feet wide. The river is crossed with spans averaging 153½ feet in the clear, with a bearing of five feet on each pier. The principle of the construction is known as the lattice girder plan, with vertical stiffening. The work was executed under the superintendence of its designer, the engineer and architect of the company Felician Stataper. The production of precious metals in the United States from 1849 to 1867 inclusive, has amounted in value to $1,174,000,000. The president of one of the New Jersey railroads proposes a plan to avoid the danger to life and limb from the series of trains that run into and out of Jersey city. The new project is to elevate the present tracks fifteen feet above the streets, and by safe machinery to lower at once an entire train in the depot at the river.