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Mascart's Reflection Electrometer

Preliminary Labors for the Railroad through the Sahara

High-Speed Ocean Steamships

Illumination of Lighthouses

The National Museum Washington— Cluss & Schulze, Architects

Superheater, Condenser, and Receiver for Steam and Air

Boiler Drilling Machine

Covering Wire

On a Method of Determining the Pressure on the Solar Surface

By E. Wiedemann

Major Macgregor's Ekowe Pocket Heliograph

Gas-Heated Soldering Iron

On the Manufacture of Soap in small Quantities without Boiling

Soap-Making Machinery

The Future of American Cotton Manufacture.—The Possibilities of Southern Water Power

Development of Gelatine Plates

By W. T. Wilkinson

Apparatus for Sulphureted Hydrogen

Apparatus for Cleansing Oil

Apparatus for Continuous Diffusion

Tar-Oil Lamp

Mesquite Bread

The Heat of Combustion of the Gaseous Hydrocarbons

Steelyard without Weights

On Bunsen's Method for Determining Free Oxygen in Water

By J. Koenig and C. Krauch

Crystallized Calcium Oxide

By A. Levallois and S. Meunier

Glover's Tower for Manufacturing Sulphuric Acid

The Therapeutical use of the Magnet

By William A. Hammond

Reduction of Gold and Silver from Ores Containing Sulphur, Antimony, or Arsenic

Process for the Manufacture of Ammoniac from Leather Rubbish by means of Distillation with Carbonate of Lime

New Apparatus for Manufacturing Gelatine at a Temperature which is below the Boiling Point of Water

By Abraham Zwillinger

Apparatus for Coating Laboratory Tools

An Experiment with Sulphur

By T. Gross

The Therapeutical use of the Magnet

By William A. Hammond

The Magnet in Paralysis

Syphilis and Modern Society

Headaches and their Treatment

Excision of the Inferior Dental Nerve for the Relief of Obstinate Neuralgia

A Sample of Cayenne

By Thomas Greenish

Biology and Microscopy

The Atmosphere of Celestial Bodies

By M. Jos*amp*eacute; J. Landeur

The Detection of Forgeries by the Microscope

The Toothed Birds of Kansas

The Antiquity of Man in Eastern America, Geologically Considered

By Henry Carvill Lewis

Jupiter's Satellites

The Toothed Birds of Kansas

The Screw Worm

By A. R. Kilpatrick

Fire Blight on Fruit Trees


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    December 11, 1880

    20% Sitewide for President's Day