The Electric Lighting Station of Tunis

Recent Aeronautical Progress, and Deductions to be Drawn Therefrom, regarding the Future of Aerial Navigation

The Catfish and its Habits

Sarsen Stones

A Great Concrete Arch in Germany

Tangential Waterwheel Efficiencies

Being An' Experimental Investigation of the Relative Values of Ntffekent Bucket Shapes

Origin and Development of Armored Concrete

Statistics of the Krupp Works

The Relations between Scientific Research and Chemical Industry

Radium in Medicine

New Mordanting Process

The Colossal Cavern of Kentucky

An Experimental Investigation of the Pressure of Light

The Camphor Industry of Formosa

Contemporary Electrical Science

Transportable Generators of Electricity with Alcohol Motors

Propagating Oyster Germs

Hydraulic Coal Hoist for Discharging Coal into Ships' Holds

Trade Notes and Recipes

Electrical Notes

Engineering Notes

Trade Suggestions from United States Consuls

Selected Formulæ