A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE,
MUNN and CO., Editors and Proprietors. PUBLISHED WEEKLY AT NO.
NEW YORK, SATURDAY, MARCH 18, 1871.
Contents:
THE INFLUENCE OF INTENSE COLD ON STEEL AND IRON. [Condensed from Nature.]
OAK GRAINING IN OIL COLORS. Condensed from the Building News.
KNOTS AND SPLICES. [ See Engraving on First Page . ]
The Hartford Steam Boiler Inspection and Insurance Company.
Improved Compound Spiral Car Spring for Railway Carriages.
PORTABLE WRITING AND COPYING CASE.
How Walking Sticks are made.
BOARDMAN'S COMBINED TOOL.
BELT TIGHTENER.
Some Things I don't want in the Building Trades.
Crystallized Honey.
RAMBLES FOR RELICS. NUMBER II.
SILK CULTURE.
Universal Boring Machine.
COMBINED TRUNK AND ROCKING CHAIR.
Cosmetics.
The Medicines of the Ancients.
BARNES' VENTILATOR FOR MATTRESSES, ETC.
A SCIENTIFIC AND TECHNICAL AWAKENING.
LYCEUM OF NATURAL HISTORY.
WARMING AND VENTILATION OF RAILROAD CARS.
THE MINERAL RESOURCES OF MISSOURI.
SCIENTIFIC INTELLIGENCE.
Unpleasant Discovery in the Patent Office Levying Black Mail.
NEW BOOKS AND PUBLICATIONS.
APPLICATIONS FOR EXTENSION OF PATENTS.
INSTRUCTIONS HOW TO OBTAIN
Information about Caveats, Extensions, Interferences, Designs, Trade-Marks, and Foreign Patents.
MUNN and CO., Ask Special Attention to their System of doing Business. Consultation and Opinions Free .
A SPECIAL EXAMINATION
Inventions Patented in England by Americans.
ISSUED BY THE U. S. PATENT OFFICE. FOR THE WEEK ENDING MARCH 7,
To Manufacturers of Knitted Goods.
Portable and Stationary
Rare and Beautiful Flowers
Science for the Million.
Boston Journal of Chemistry,
Universal Wood Worker.
Inventor's Exchange , 245 Broadway, N. Y.,
UNITED STATES
BEST IN THE WORLD,
BRICKS.
F. C. WELLS, President,
THE NEW WILSON
WOODBURY'S PATENT
TURBINE WATER WHEELS.
SCHENCK'S PATENT.
Woodworth Planers.
THE CELEBRATED
EPILEPSY OR FITS.
An Important Fact. MARVIN and CO.'S
Have never been Robbed.
L: L: SMITH and CO.,
THE ORIGINAL L. B. TUPPER'S Furnace Grate Bar.
A SPRING OF WATER AT THE TOP OF THE HOUSE.
WATCHES THAT ARE WATCHES.
Engines, Tools, Machinery, etc., FOR SALE AT THE
PENN WORKS ,
"Our Low-Water Wheel from this on"
PAGE'S
NICKEL PLATING.
LIVE MECHANIC
American Saw Co., Manufacturers of
PULLEY BLOCKS.
DOYLE'S PATENT DIFFERENTIAL
For 1871. TWENTY-SIXTH YEAR.
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