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Features

Machine for Making Tan-Bark Fuel

Improved Heilmann Combing Machine

The Dobby Machine of Ainsworth

The Railway Tunnel Between France and England

The Rigi Railroad

Flexible Couplings for Screw Shafts

The Gas Works of Brussels, Belgium

Alarm Water Gauge

Improved Calendering Machinery

American Cements

Details from St. Albans

The Consumption of Paper

The Origin of the Indian

The Herdic Coach

The Earth as a Conductor of Electricity

By John Trowbridge

New Dielectric Machine

By Abbe Le Dantec

Improvements in Coils of the Siemens Type

By G. Trouv*amp*eacute;

On The Color Relations of Nickel and Cobalt

By James Bottomley

A Theory of Sewer Gas

By P. H. Vander Weyde

The Electric Discharge in Gases

New Aniline Colors

By K. Engan

Explosive Mixtures of Coal Gas and Air

By W. Foster

Printing Aniline Black with Vanadium

On The Analysis of Soaps

By Jul. Loewe

Incombustible Tissues, Especially Curtains Ball Dresses, Etc.

Constancy of Carbonic Acid in the Air

By T. Schloesing

Aniline Black Dyeing by Means of Vanadium

Alizarin Blue

By C. Graebe

Tobacco Smoking Experiments

Rupture of the Membrana Tympani

By Cornelius R. Agnew

Ytterbium

By L. F. Nilson

The Solution of Platinum in Sulphuric Acid

By M. Scheurer-Kestner

The Manufacture of Aluminum, Sodium, and Similar Metals

Influence of Impure Water on Health

By R. Emmerich

Cotton Seed Oil Cake as a Fertilizer and Food

By Wm. L. Dudley

The Cyclograph

Japanese Inundation Fever

Notes Respecting the Royal Observatory

The Geyser Region in the National Park

The Geological History of the North American Flora

By J. S. Newberry

Result of Drying Seeds

By E. Wollny

Departments

  • Copper in Plants Which Grow on Primordial Rocks

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September 11, 1880

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