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The New Observatory on the Pic Du Midi, of the Pyrenees

Connection Between the Daily Fluctuations of the Barometer and of the Magnetic Needle

By John D. Parker

Study of Hailstorms and their Accompanying Phenomena


Fogs and their Causes

By R. A. Proctor

Relation of Meteorites to Comets

The Nebular Theory

Archeological Explorations in Tennessee

By F. W. Putnam

The Geology of Coal

The Anatomy of the Male Chimpanzee

Electric Chronograph for Steam Boilers

Dr. S. M. Plush Battery Cell

A New Enemy of the Grapevine

The Robin

By Mary E. Holmes

The Atlantic and Pacific Interoceanic Canal

The Ohio River Coal Barge System

Milling Machinery at the Paris Exhibition

Iron and Steel at Paris

Steel Welding

By Sergius Kern and St. Petersburg

Romans' Hand Car

Silk Culture in the United States

Japanese Lacquer

Improved Cotton Stretchers

Clean Photo Plates

By F. A. Bridge


By H. Moissan

“Garnet,” the Residue of the Manufacture of Magenta

By M. Jousset De Bellesme

Radiation of Incandescent Platinum

By J. Violle

On the Reddening of Carbolic Acid

On Aniline and the Methylated Toluidines and on the Dyes Derived from Them

By P. Monnet, F. Reverdine and E. Noelting

Liquefaction of Silicide of Hydrogen

By M. Ogier

Lantern Slides and Transparencies

By William Brooks

Philosophical Society of Glasgow

Preparation of Sulphate of Indigo

By M. Van Laer

A New Method of Measuring the Chemical Intensity of the Solar Ray

Tenacity of Starch

By George Whewell

Gas Analysis and Apparatus

Braun'S Centrifugal Apparatus for Separating Solid and Liquid Particles from Gases

Italian Precautions against the Phylloxera

Loss of Hair

By John V. Shoemaker

Plants of Ancient Egypt

Culture of the Calla Lily


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    April 26, 1879