SA Supplements

July 1881

Volume 12, Issue 289supp

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Features

Central American Antiquities

Newly Opened Pyramids

The Basin of the Gulf of Mexico

J. E. Hilgard

The Feejee Islands and their Resources

Robert Wilhelm Bunsen

Testing Exploded Boiler Plates

A Simple Gas Motor

Jean Louis Baudelot

An Improved Dredger

Wooden Pavements in San Francisco

Worthington Compound Pumps

Suggestions in Architecture

American Milling

Andrew Hunter

Surveying of Mining Claims in Colorado

Richard A. Parker

Subterranean Telegraph Cables

Measuring the Index of Refraction of Ebonite

New Telephones

The Storage of Electricity. –Interesting Scientific Correspondence

We subjoin a series of letters by distinguished men of science in which the value of the new Faure battery is discussed from several different standpoints:

The Herz Telephone

Domestic Electricity

Physical Society, London, April 9, 1881

W. G. Adams

An Experiment with the Induction Balance

Philosophical Society of Glasgow, February 21, 1881

J. Mactear

Double-Action Mercurial Air-Pump

The New State Insane Hospital, Near Norristown, Pennsylvania

Magical Pitchers and Drinking Vessels

Flax as a Carrier of Disease

Charcot on Hypnotism

Palmieri's Report Regarding the Observatory of the Vesuvius

The Partial Eclipse of the Sun, December 31, 1880

J. Rand Capkon

Glycolic Acid from Sugar

H. Kiliani

The Border-Land of Chemistry and Biology

Report on Analytical Chemistry

Pyroxyline Varnishes

Hot Ice

Lohse's Method of Preparing Emulsion

On the Connection of the Molecular Properties of Inorganic Compounds with their Action upon the Living Animal Organism

James Blake

Henna Leaves and Powder from Lawsonia Alba

Heinrich Paschkis

Rapid Detection of the Presence of Water in Alcohol and Ether

Carl Mann