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Business Profits

The Loss of the Channel Steamer Victoria

Houdin's Magic Ball

The Problem of the Matches

A Trick with Dice

Acuteness of Hearing

The New Uniform for the French Infantry

The Similarity of the Phenomena of the Nervous Sleep, Hypnotism, Spiritualism, to the Physiological Action of Cannabis Indica or Hashish

By A. L. Hodgdon

Climate in its Relation to Health

Lecture III.—Continued

By G. V. Poore

The Modern Marine Engine and Boiler

Alimentary Value of Albuminous Substances

The Archimedean Screw Pump

New Tunnel under the Thames River, London

Improved Methods of Heating Railway Trains

II.The Twofold Method-Continuous or Independent

By C.Powell Karr

Notes on the Panama Canal

By R. Nelson Boyd

A 100 Horse Power Secondary Battery

An Equatorial Zone of Almost Perpetual Electrical Discharge

Apparatus for Testing Lightning Conductors

Zigang's Electric Trumpet

Perron's Photographic Apparatus

M.Jouanne's Double Projection Photometer

The Autographometer

Alaska Gold

Going into the Poultry Business

By P. H. Jacobs

A Grist Mill of 1819

Soil Temperatures

By D. P. Penhallow

Building Plans and Specifications


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