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A. S. & J. GEAR & CO., Boston, furnish every description of Wood and Iron Working Machinery and Supplies. The best in use, regardless of maker, at lowest possible rates.
_WORKING MODELS_
And Experimental Machinery, Metal, or Wood, made to order, by J. F.
WERNER 62 Center st. N. Y.
McNAB & HARLAN, Manufacturers of Wrought Iron Pipe and Fittings, Bra.s.s c.o.c.ks, Valves, Gage c.o.c.ks, Whistles, Water Gages, and Oil Cups, Harlin's Patent Lubricator, Plumber's Bra.s.s Work, Getty's Patent Pipe Cutter, Getty's Patent Proving Pump and Gage. No. 86 John st., New York.
THE ALLEN ENGINE WORKS, THE ALLEN ENGINE.
Fourth avenue and 130th and 131st sts., New York city Manufacturers of
PORTER'S GOVERNOR, THE ALLEN BOILER, AND STANDARD STRAIGHT EDGES, SURFACE PLATES, AND ANGLE PLATES.
Four first premiums were awarded to us at the Fair of the American Inst.i.tute, 1870.
Send for our ill.u.s.trated circular.
_L. W. POND--NEW TOOLS._
EXTRA HEAVY AND IMPROVED PATTERNS.
LATHES, PLANERS, DRILLS, of all sizes; Vertical Boring Mills, ten feet swing, and under; Milling Machines, Gear and Bolt Cutters; Hand Punches and Shears for Iron.
Office and Warerooms, 98 Liberty st., New York; Works at Worcester, Ma.s.s.
A. C. STEBBINS, New York, Agent.
WATER-PROOF _BUILDING PAPER_
(No Tar), for Roofing, Sheathing, Ceilings, Oil-cloths, Shoe Stiffenings, Tags, Trunks, Cartridges, Blasting, Pa.s.s-book Covers, Grain and Flour Bins, etc., for sale by
J. HUNTER, JR., Paper Warehouse, 59 Duane st., New York.
SCIENTIFIC AMERICAN
FOR 1871.
TWENTY-SIXTH YEAR.
EVERY NUMBER is printed on fine paper, and elegantly ill.u.s.trated with original engravings representing
NEW INVENTIONS, NOVELTIES IN MECHANICS, MANUFACTURES, CHEMISTRY, PHOTOGRAPHY, ARCHITECTURE. AGRICULTURE. ENGINEERING, SCIENCE, AND ART.
Farmers, Mechanics, Inventors, Engineers, Chemists Manufacturers and People of all Professions or Trades will find the
SCIENTIFIC AMERICAN
of great value and interest.
The Editors are a.s.sisted by many of the ablest American and European Writers, and having access to all the leading Scientific and Mechanical Journals of the world, the columns of the SCIENTIFIC AMERICAN are constantly enriched with the choicest Information.
An Official List of all the Patents Issued is published Weekly.
The Yearly Numbers of the SCIENTIFIC AMERICAN make two splendid Volumes of nearly ONE THOUSAND PAGES equivalent in size to FOUR THOUSAND ordinary book pages.
SPECIMEN COPIES SENT FREE.
TERMS--$3.00 a year, $1.50 half year; Clubs of Ten Copies for one year, at $2.50 each, $25.00,
With a SPLENDID PREMIUM to the person who forms the Club, consisting of a copy of the celebrated Steel Plate Engraving, "Men of Progress."
Address
MUNN & CO., PUBLISHERS OF THE SCIENTIFIC AMERICAN.
37 PARK ROW, NEW YORK.
THE "Scientific American" is printed with CHAS. ENEU JOHNSON & CO.'S INK. Tenth and Lombard sts. Philadelphia, and 59 Gold st. New York.
