Send for Agents' Circular—Hinkley Knitting Machine Co., 176 Broadway. Adding Machines, simple & thorough, Macdonald,37 Park Row. See notice of Dashner's Gun Lock, under " Recent American and Foreign Patents." Patent for sale. Money.—It will cost you three cents to write to us, and pay you ten to fifteen dollars. Carlos & Co., Box 2428, St. Louis, Mo. Envelopes addressed, in superior style, by J. H. Edwards,Brook-lyn, N. T. Send stamps for specimens of penmanship and envelopes. The Family Steelyard—A new thing, weighs correctly from a balance and ounce notches throughout. Send for circular. H. Maran-vllle, Akron, Ohio. Portland Cement of best quality, $10 per bbl. Send for circular. Imported by J. E. Mitchell,S10 i' ork avenue, Philadelphia. Important Improvements in Sewing Machines for sale. The inventor cannot attend to it. Address Patentee, Postoffice Box 2256. Wanted—Second-hand engine lathes, drilling machines,chuck-ing lathes, and trip or power hammerB. Address, with description, the Warrior Mower Co., Little Falls, N. Y. Wanted—A competent Sewing Machinist, to take charge of repairing. Address " F," Baltimore, Md. First-class Fence for River Bottoms. Address the patentee W. F. Auxier, Mason City, fll. If you want the real oak-tanned leather-belting, C. W. Arny manufactures it. See advertisement. Peck's patent drop press. For circulars, address the sole manufacturers, Milo Peck & Co., New Haven, Ct. J. T. Plass' patent safety band saw, is the most perfect saw made. Gives universal satisfaction. Manufactured only at his works, 204 East 29th St., New York. Send for descriptive circular. Materials for all Mechanics and Manufacturers, mineral substances, drugs, chemicals, acids, ores, etc., for sale by L. & J. W. Feucht-wanger, Postoffice Box 3016, Chemists, Drug and Mineral Importers, 55 Cedar St., New York. Ulster Bar Iron, all sizes, rounds, squares, flats, ovals, and half-ovals, for machinery and manufacturing purposes, in lots to suit purchasers. Egleston Brothers & Co., 166 South St., New York. Wanted—A second-hand " Index Milling Machine." Send price, etc., etc., to W. F.Parker,Meriden, Conn. A good engine & boiler wanted. Wm. Louden, Fairfield,Iowa. Grindstones are kept true and sharp by using Geo. C. Howard's Patent Hacker. Send for circular 17 S. 18th St., Philadelphia. Cochrane's low water steam port—The best safeguard against explosions and burning. Manufactured by J. C. Cochrane.Rochester.N.Y. Send for a circular on the uses of Soluble Glass, or Silicates of Soda and Potash. Manufactured by L. & J. W. Feuchtwanger, Chemists and Drug Importers, 55 Cedar St., New York. Mill-stone dressing diamond machine, simple, effective, durable. Also, Glazier's diamonds. John Dickinson, 64 Nassau St., New York. Leschot's Patent Diamond-pointed Steam Drills save, on the average, fifty per cent oi the cost of rock drilling. Manufactured only by Severance & Holt, 18 Wall St., New York, Tempered steel spiral springs made to order. John Chatillon, 91 and 98 Cliff St., New York. Tlie Tanite Emery Wheel—see advertisement on inside page. For solid wrought-iron beams, etc., see advertisement. Address Union Iron Millr,, Pittsburgh, Pa., for lithograph, etc. Machinists, boiler makers, tinners, and workers of sheet metals read advertisement of Parker's Power Presses. Diamond carbon, formed into wedge or other shapes for pointing and edging tools or cutters for drilling and working stone, etc Send stamp for circular. John Dickinson, 64 Nassau St., New York. Winans' boiler powder, 11 Wall st., N. Y., removes Incrustations without injury or foaming 12 years in use. Beware of imitations.