NEW YORK, JULY 7, 1883
Reading edition
Scientific American Supplement. Vol. XVI, No. 392.
Scientific American established 1845
Scientific American Supplement, $5 a year.
Scientific American and Supplement, $7 a year.
TABLE OF CONTENTS.
I. ELECTRICITY AND MAGNETISM.--Improved Dynamo Machine. Eight figures.
An Improved Manganese Battery.--By GEO. LEUCHS.
The Cause of Evident Magnetism in Iron, Steel, and other Magnetic Metals.--By Prof. D. E. HUGHES. Neutrality.--Superposed Magnetism.--Elastic Nature of the Ether Surrounding the Magnetic Molecules. 3 figures.
II. ENGINEERING.--The Westinghouse Brake. 2 figures.
Hydraulic Elevators and Motors.--By B. F. JONES.--Bearing upon the Water Supply of Cities.--Cost of Water used.--Objectionable effects on Water Works.--Best method of arranging water supply.--Cause of Accidents.--Advantages of Water Motors over Steam Engines.--Rates for Water Motors.
Water Supply of Small Towns.--Process of Softening Hard Water. Six figures.
Improved Water Meter. Several figures.
III. TECHNOLOGY.--Washing Machine for Wool. 1 figure.
Increasing the Illuminating Power of Gases, etc.--By V. POPP.-- 3 figures.
Preventing Iron from Rusting.
An Elastic Mass for Confectioners' Use.
Caoutchouc.
Photographic Action Studied Spectroscopically.
Salt and Lime.
Renewing Paint without Burning.
A Green or Golden Color for all Kinds of Brass.--By E. PULCHER.
Vinegar.
The Preservation of Meat by Carbonic Acid.
On the Adulteration of Soap.--By Dr. H. BRACKEBUSCH.
IV. CHEMISTRY.--Testing Olive Oil.--By Dr. O. BACH.
On the Theory of the Formation of Compound Ethers.
The Alizarine Industry.
Reduction of Oxidized Iron by Carbonic Oxide.
V. MEDICINE AND HYGIENE.--Bovine and Human Milk; the Difference in its Action and Composition.--By C. HUSSON.
Cereal Foods in their Relation to Health and Disease.--By F. R. CAMPBELL.
Moist Air in Living Rooms.
The Developmental Significance of the Human Physiognomy.-- By E. D. COPE.--Numerous illustrations.
VI. NATURAL HISTORY.--The Diamond Fields of South Africa.
Sponges at the Bahamas.
Testing Fish Ova for Impregnation.
VII. MISCELLANEOUS.--The Production of Fire. 4 figures.
St. Blaise.--The winner of the Derby. 1 illustration.