Chemical Gardens

Some Pleasing Experiments That Are Easily Performed

Danger in Shaking Hands

Cement Trade in Ecuador

Synchronous Gearing

Mechanisms of Essential Importance in the Printing Telegraph

The Mechanism of a Dream

Operations of the Mind When Volition Is In a State of Suspense

Power from Tidal Currents in the Bay of Fundy

Baking Paint on Steel Cars

Medicines used by the Ancient Romans

The Proposed German Nitrogen Monopoly

Phosphorescent Calcium Sulphide

Winter in the Trenches

Disheartening Conditions for the Fighting Men in France

Electric Truck Troubles

Early Experiences of Manufacturers, and How They Have Been Overcome

The Sidereal Center

Zinc Wire

Production of Iron Ore

Artificial Seasoning of Timber

Methods and Principles Adopted for Various Materials

A New System of Navigation and Nautical Astronomy

Oceanic Tides with Special Reference to the Work of the United States Coast and Geodetic Survey

A Method of Drop Measuring Liquids and Suspensions

A New Bunsen Burner

Energy Transformations during Horizontal Walking