OUR NEW IMPROVED DOUBLE COILED METALIC TELEPHONE IS THE FINEST IN THE WORLD, and the only completely satisfactory low priced instrument, with SPRING CALL ATTACHMENT, made by PRACTICAL MACHINISTS on scientific principles; warranted to work ONE MILE, unaffected by changes in the weather. We will send to one address ONE SAMPLE SET, comprising two Telephones, two walnut holders, six copper bound insulators and 200 feet heavy wire, AT 25 PER CENT. DISCOUNT from REGULAR RATES, which is $3.00 for the $4.00 instruments. This offer WILL NOT hold good after JAN. 15, 1879, as our goods will then be sufficiently well known to sell through the trade, and we shall be obliged to strictly maintain the retail price. Any person of ordinary intelligence can put them up by following directions sent with each pair. We have sold during the last three months nearly 1000 of these instruments, and have HUNDREDS OF TESTIMONIALS from all parts of the country. We GUARANTEE all instruments sold. For any Telephone that fails to work, we will REFUND THE MONEY and pay all charges. Ask any Commercial Agency, and you will find we are good for all we agree to do. Name this paper when you write. KENT, WOODMAN & CO., 25 CONGRESS ST., BOSTON, MASS. THE DEFIANCE METALLIC PLANES TRADE MARK [Illustration] "THE BATTLE AXE." ARE THE BEST IN THE WORLD. Send for a full descriptive circular and price list to the manufacturers, the BAILEY WRINGING MACHINE CO., 99 CHAMBERS ST., NEW YORK. [Illustration] BEST AND CHEAPEST FOOT POWER SCREW CUTTING ENGINE LATHES SEE FULL DESCRIPTION IN SCIENTIFIC AMERICAN JULY 27 SEND FOR ILLUSTRATED CATALOGUE GOODNOW & WIGHTMAN 176 WASHINGTON ST BOSTON MASS. _THE ONLY GRAND PRIZE_ FOR SEWING MACHINES, AT THE EXPOSITION UNIVERSELLE, PARIS, 1878, WAS AWARDED, OVER 80 COMPETITORS, TO WHEELER & WILSON MFG. CO. NEW YORK CITY, AND BRIDGEPORT, CONN. Round Writing Useful for Everybody Book of Instructions & Pens Sent on receipt of $1.50 KEUFFEL & ESSER, 127 FULTON ST., N. Y., Importers and Manuf'rers of Drawing Materials. AMERICAN STANDARD GAUGE AND TOOL WORKS. 22d and WOOD STS., PHILADELPHIA. Standard Gauges and Measuring Implements, Hardened Steel Turning Mandrels, Adjustable Blade Reamers, Patent Tool Holders, Lathe Drivers, etc. JOHN RICHARDS & CO., [Illustration] WARRANTED THE BEST. 1 H.P. BOILER & ENGINE, $150. 2 H.P., $175. 3 H.P., $200. Tested to 200 lbs. Steam. LOVEGROVE & CO., 152 N. 3d ST., PHILADELPHIA, PA., Builders of Engines and Boilers, 1 to 100 horse power. Send for circulars and prices, and state size and style you want. WOOD-WORKING MACHINERY, Such as Woodworth Planing, Tonguing, and Grooving Machines, Daniel's Planers. Richardson's Patent Improved Tenon Machines, Mortising, Moulding, and Re-Saw Machines, and Wood-Working Machinery generally. Manufactured by WITHERBY, RUGG & RICHARDSON, 26 Salisbury Street, Worcester, Mass. (Shop formerly occupied by R. BALL & CO.) LAP WELDED CHARCOAL IRON