Case Hardening Preparation. Box 73, Willimantic, Ct.
Vertical Burr Mill. C. K. Bullock, Phila., Pa.
Sheet Metal Presses, Ferracute Co., Bridgeton, N. J.
Mundy's Pat. Friction Hoist. Eng., of any power, double and single. Said by all to be the best. J. S. Mundy, Newark, N. J.
Auction Sale.—The Machinery and Property of the well known Hardie's Machine Works, 62 and 64 Church St., Albany, N. Y., will be sold March 26, at noon. No postponement.
To Manufacturers or Capitalists.—A rare chance to control a valuable agricultural patented implement. Address S. A. Fisher, Maplewood, Mass.
Reflecting Telescope, 6½ inches aperture, well mounted, price only $70. J. Ramsden, Philadelphia, Pa.
See Hogins' Laundry Table, illustrated on page 194. State, Canada, and entire right for sale.
Emery.—Best Turkey Emery in bbls., kegs, and cases in quantities to suit. Greene, Tweed & Co., 18 Park Place, N. Y.
The Scientific American Export Edition is published monthly, about the 15th of each month. Every number comprises most of the plates of the four preceding weekly numbers of the Scientific American, with other appropriate contents, business announcements, etc. It forms a large and splendid periodical of nearly one hundred quarto pages, each number illustrated with about one hundred engravings. It is a complete record of American progress in the arts.