Scientific Books to order. Macdonald Co.,37 Paris; Row.N.Y. An end to tlie 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. "A perfect protection. —Scientific American. To Iron Manufacturers and Machinists.—A practical mechanic, draftsman, and engineer desires a position as general engineer at a blast furnace, or would invest a small capital and enter as a working partner in some mechanical business. Address K. F. Thomas,513 Brown 8t.,Phila.,Pa. Rights for sale of Cannon's improved dumb waiter. Patented May2 5th, 1869. Address A. Cannon, Jr., Patentee, Poughkeepsie, N. Y. It you have a Patent to sell,or desire any article manufactured or introduced, address National Patent Exchange, Buffalo, N. T. Maleahle iron manufacturers address A.J.Smith.Canal Dover,0. Chain manufacturers send price list to J.T.Raftery,El Dara.Ill. All of Baird's Scientific Books for sale by S. R. Wells, 389 Broadway. Catalogues furnished free. State Rights for sale for the best and cheapest Centrifugal Pump in existence. First Premiums awarded wherever exhibited. Address P., for circulars, Poatoffice Box 148, Jersey City, N. J. Peck's patent drop press. Milo Peck Co., New Haven, Ct. The Best and Cheapest Boiler-flue Cleaner is Morse's. Send to A. H. M. :Morse, Franklin, Mass., for circular. Agents wanted. Continental Screw Company's Stock wanted. Address J. C. Clarli, 66 Leonard at. New York. For sale—A valuable Patent Right for an effective army and cotton worm destroyer. 20 bales of cotton saved in one day. Address. Charles Steinmann, Napoleonyille, La. Wanted—Large or small capital, to sell Walker's Ventilator protector from sun-stroke. Send 50c. for sample, pamphlet, and terms. J. B. Walker, Lexington, Va. Mill-Stone dressing diamond machine. Simple, effective, durable ! Also, Glazier's diamonds. John Dickinson, 64 N.issau st.. New York. An engineer,about leaving for Europe (where he has first-class : lousiness friends), to negotiate a very valuable patent, is desirous of rc-j ceiving one or two similar commissions. Ist-class firms only treated with Keferences A 1. For particulars address H. Moore, P.O. Box 6,New York. Leschot'a Patent Diamond-pointed Steam Drills save, on the average, fifty per cent of the cost of rock drilling. Manufactured only by Severance Holt, 16 Wall st.. New York. For Sale—A Patent valuable to manufacturers of farm machinery. Will sell ov. or trade for lands. Send address to H. S., Box 651, Cincinnati Postofllce, Ohio. 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 vtrought-iron beams, etc., see advertisement. Address Union Iron Milla, Pittsburgh, Pa., for litbograpb, 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, Gi 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. Y., removes Incrustations without in jury or foaming 12 years in use. Beware of imitations.
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