SCIENTIFIC AMERICAN SUPPLEMENT NO. 483
NEW YORK, APRIL 4, 1885
Scientific American Supplement. Vol. XIX, No. 483.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I.
CHEMISTRY AND METALLURGY.—The Determinationof Graphite in Minerals.—By J.B. MACKINTOSH.
Sulphocyanide of Potassium.
Sugar Nitro-glycerine.
On Remelting of Cast Iron.
The Hardness of Metals.
II.
ENGINEERING, ETC.—The Jet Ventilator. 4figures.
Feeding Boilers at the Bottom. 2 figures.
The Honigmann Fireless Engine.—The firelessworking of steam engines by means of a solution of hydrate ofsoda.—With several figures and diagrams.
Simple Methods of Calculating Stress inGirders.—By CH. LEAN.—With full page ofillustrations.
A Spring Motor.
Steam Yachts.
III.
TECHNOLOGY.—Foucault's Apparatus forManufacturing Illuminating Gas and Hydrogen. 2 figures.
The Circle Divider.
Soluble Glass.—Process ofmanufacture.—Use.
Iron Printing and MicroscopicPhotography.—Formulas for printing solutions.—Compoundnegatives.
Practical Directions for Making LanternTransparencies.—By T.N. ARMSTRONG.
Casting Chilled Car Wheels. 6 figures.
IV.
ELECTRICITY, ETC.—Electricity andPrestidigitation. 2 figures.
Portable Electric Safety Lamp. 6 figures.
The Electric Discharge and Spark PhotographedDirectly without an Objective. 6 engravings.
V.
PHYSICS, ETC.—The True Constant ofGravity.
Origin of Thunder Storms.
Physics without Apparatus.—Manufacture ofilluminating gas.—Elasticity of bodies. 2 figures.
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