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The Crime of Inventing Machinery

Railway Velocipedes

Skew-Bevel Wheels

By C. W. MacCord

100-Horse Power French Beam Engine

The Theory of the Grooves in Millstones

The Derwent Bridge

Sunday-School Buildings

Electromotive Force—Resistance and Current

By J. T. Sprague

M. Ader's Telephone without a Diaphragm

By M. Le Comte Du Moncel

On Simple Forms of Microphone Receivers

By W. J. Millar

Fuller's Electric Light

J. B. Fuller

Changes of Spectra

Gas as Fuel

Aniline (C6H7N)

Detaching Negatives from their Glass Supports

A Communication to the Photographic Society of France

Rubber Hoof Cushions

Wire vs. Twine Binding for Wheat

A Study of Wheat

By Lou Reed Stowell

The Cultivation of Mushrooms

Sir J. Lubbock on Ants

The Sturgeon


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