Send for Agents' Circular—Hinkley Knitting Machine Co., 176 Broadway. Balloon netting, strong and large, for sale. Box 896, Dayton,O. Cochrane's low water steam port—The best safeguard against explosions and burning. Manufactured by J. C. Cochrane,Iochester,N.Y. Carroll County Agricultural Fair, to be held at Westminster, Md., for four days,commencing on the 28th September, 1869. For premium lists address Wm. A. McKelUp, Sec, Westminster, Md. The Phoenocinopticon—An application of the principle of the Zoetrope to the Magic Lantern. Patent for sale. Send for circular. O. B. Brown, 126Tremont st., Boston. Send for a circular on the uses oi Soluble Glass, or Silicates of Soda and Potash. Manufactured by L. &J. W. Feuchtwanger, Chemists and Drug Importers, 55 Cedar St., New York. If you want to buy or hire a first-class factory or machine shop of moderate size, within easy access of New York city, read advertisement on last page. Working mechanical drawings a specialty. R. Thompson, Bridgeport, Conn. Glass signs and Cards.—Artistic and mechanical methods of gilding, pearling, and embossing lettering, borders, etc., on reverse of glass. Complete instructions sent for 3. J. O.Belknap, 112 Broadway, New York. References given if required. Wanted—An intelligent machinist and blacksmith to make grindstone shafts and take charge of shop. Send address, reference, and wages to J. E. Mitchell, 310 York Ave., Philadelphia. Scientific American, New Series, complete, 20 volumes, neatly and uniformly bound, for sale. Price $60. Address Theo. Tusch, C-ity Agent, Eoom 29, No. 37 Park Eow, New York city. An end to the explosion of lamps :—No accidents, no loss of life can occur where the Aparett is used. It can be applied to any kind of lamp or can. Address Van Wilhem &Co., Box 506, Pittsburgh, Pa. " A perfect protection."—Scientific American. Peck's patent drop press. Milo Peck &Co., iNew Haven, Ct. The Best and Cheapest Boiler-flue Cleaner is Morse's. Send to A. H. &M. Morse, Franklin, Mass., for circular. Agents wanted. If you have a Patent to sell,or desire any article manufactured or introduced, address National Patent Exchange, Buffalo, N. Y. To Manufacturers or Patentees.—Wanted—By a responsible hardware house, long established in the city of New York, the agency or the right to manuf acture,some good patented article in their line of trade. Address P. D. &Co., Postofflce Box 3,517. Continental Screw Company's Stock wanted. Address J. C Clark, 66 Leonard St., New York. For sale—A valuable Patent Right for an effective army and cotton worm destroyer. 20 bales of cotton saved in oue day. Address Charles Steinmann, Napoleonville, La. Mill-stone dressing diamond machine, simple, effective, durable Also, Glazier's diamonds. John Dickinson, Nassau St., New York. Leschot's Patent Diamond-pointed Steam Drills save, on the average, ilf ty per cent of the cost of rock drilling. Manufactured only by Severance &Holt, 16 Wall St., New York. Tempered steel spiral springs made to order. John Chatillon, 91 and 93 Cliff st., New York. The Tanite Emery Wheel—see advertisement on inside page. For solid wrought-iron beams, etc., see advertisement. AddreBS Union Iron Millo, 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. The paper that meets the eye of manufacturers throughout the United States—The Boston Bulletin. $4-00 a year. Adv'g 17c. a line. Winans' boiler powder, 11 Wall st., N. T., removes Incrustations without injury or foaming 12 years in use. Beware of imitations.