The Charge for Insertion under this heat is One Hollar a Line. If the Notices exceed Four Lines, One Dollar ana a Balf per line will be charged. Scientific Books to order. Macdonald & Go.,37 Park Row.N.Y. Acid or Superphosphate Works for sale. C. Delafield, 71 Broadway, New York. WantedSeveral second-hand power presses, medium sizes, and two drop presses. Address C. H. Sedgwick & Sons, Poughkeepsie,N.Y. WantedFinished woodwork for wheelbarrows, (wheels, trays, or frames finished). AddressPostofflce box 6,721, New York. For saleThe entire Right, or State and County Rights for the best Holdback for carriages out. Complete in two pieces. No tongue or spring; employed. Beckwith & Graham, Oriskany, N. Y. Corn Cutter.Wanteda machine for cutting green com from the cob for canning. Sleeper, Wells & Aldrich, Burlington, N. J. DamagesRockwood, 839 Broadway, has successfully photographed ruins from fires and collisions, for legal evidence in contested insurance claims. Bartlett's Instantaneous " Gas Lighter," especially adapted for street and all elevated gas lamps. Witness its operation by the Manhattan Gas Co.,who are now lighting over 7,000 street lamps by it. J. W. Bartlett 563 Broadway, New York. Superintendent wanted in a well-established machinery business, who can buy an interest. Liberal Salary to a thoroughly competent man. None other need appky. Address " Iron Works," Care Jay, Coe & Co., Tribune Buildings, New York. Steam engine, Harrison boiler, rotary pump, wrought iron steam and water pipes, much below cost, by G. Leverich, Mechanical Engineer, Broadway, New York, room 46. All who want a good chance to start an agricultural machine shop (of any kind) address Chas. Boynton, Lyons, Iowa. Isometric drawing.Illustrated pamphlet, giving full instruc-tions,free by mail, for only 15 cents. C. C. Klein.1804 Hamilton st.,Phil'a,Pa. A small,useful patent for sale. Address A.Storm,Matteawan,N.Y. Peck's patent drop press. Milo. Peck & Co., Id e w Haven, Ct. Gear-cutting enginesnew patternscut every number up to 127, and 26 in. diam., made by A. H. Saunders, Nasbua, N. H. Cider Mills for sale, and rights to manufacture. Address H. Sells, Vienna, Ont., or Shaw & Wells, Buffalo, N. Y. Scientific AmericanOld and scarce volumes, numbers, and entire sets of the Scientifi c American for sale. Address Theo. Tusch, Box 448, or Koom 29, No. 87, Park Sow, New York city. State Rights for sale of a new and valuable improvement on the velocipede, in successful operation. L. H. Soule, Binghamton, N. Y Glynn's Anti-incrustator for steam boilersthe only reliable preventive. Prevents foaming and does not attack the metals of the boiler Liberal terms to agents. M. A. Glynn & Co., 73C Broadway, New York. For the best hammer and sludge handles, made of carefully-selected, well-seasoned, second-growth hickory, address floopes, Bro. & Darlington, West Chester Spoke Works, West Chester, Pa. Tempered steel spiral springs made to order. John Chatillon 91 and 93 Cliff St., New York. Every Mechanic should have Baxter's Adjustable " S" Wrench , No. 8, Vol. 20, this Journal. Baxter Wrench Co., 10 Park Place, New York A. A. Fesquet, practical* and analytical chemist. Construction of chemical works, etc., 323 Walnut St., Philadelphia. The Tanite Emery Wheelsee advertisement, on inside page W. J. T.We think the patent asbestos roofing manufactured by H. W. Johns, of this city, is the b est substitute for tin or slate. It is cheap and easily applied. For solid wrought-iron beams, etc., see advertisement. AddresB Union Iron Milln, Pittsburgh, Pa., for lithograph, etc. Machinists, boiler makers, tinners, and workers of sheet metalB read advertisement of Parker's Power Presses. Pearl Barley can b"e made on stones to be had of J. E. Mitchell, 810 York ave., Philadelphia, Pa. Winans' boiler powder, 11 Wall St., N. Y., removes Incrusta. tions withont injury or foaming 12 years in use. Beware of imitations.