NEW YORK, APRIL 11, 1885
Reading edition
Scientific American Supplement. Vol. XIX, No. 484.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I. ENGINEERING AND MECHANICS.—Bridge over the Blaauw Krantz Ravine, Cape Colony.—2 engravings.
Torpedo Ships.
The Gas Engine.—By DUGALD CLERK.—Combustion engines.—First cylinder and piston engine.—Watt's experiments.—First gas engine.—Principles of the gas engine.
Rapid Construction of the Canadian Pacific Railway.—By E.T. ABBOTT.
The Osgood Mammoth Excavator.—3 figures.
Capstan Navigation on the Volga.—4 figures.
Steamboat Equipment of War Vessels.—With engraving of winch for raising and lowering torpedo boats.
Improved Steam Trap.—1 engraving.
II. TECHNOLOGY.—Critical Methods of Detecting Errors in Plane Surfaces.—By JOHN A. BRASHEAR.—11 figures.
Photometric Standards.—9 figures.
Bleaching or Dyeing Yarns and Goods in Vacuo.—1 figure.
On the Moulding of Porcelain.—By CHAS. LAUTH.—Moulding by pressure of the air.—Moulding by vacuum.—Drying the moulded pieces.—2 figures.
Photo-Tricycle Apparatus.—1 figure.
A Photo Printing Light.—1 figure.
A New Actinometer.
Astronomical Photography.
Electricity as a Preventive of Scale in Boilers.
III. DECORATIVE ART.—Alphabet designed by Godfrey Sykes.—An engraving.
Old Wrought Iron Gate.—An engraving.
IV. GEOLOGY.—The Organization and Plan of the United States Geological Survey.—By J.W. POWELL.—A topographic map of the United States.—Paleontology.—Chemistry.—Physical researches.—Statistics.—Library.—Publications.—General geology.—Economic geology.—Relation of the general survey to the State survey.
V. BOTANY, ETC.—The Sunflowers.—Annuals, perennials, etc.—11 engravings.
Lye's Fuchsias.—1 engraving.
VI. HYGIENE, ETC.—Brief Sanitary Matters in Connection with Isolated Country Houses.—By E.W. BOWDITCH.
Sanitary Cooking.—By V.L. OPPENHEIMER.
Time required to digest Different Foods.