Effect of Motors on Macadam Roads

How Cars Ought to be Designed to Preserve Roads

The Walnut Lane, Philadelphia, Bridge

A Majestic Concrete Structure

Electric Furnaces in Germany

What it Cost to Reduce ores Electricity

Blau Gas, a New Gas for Illuminating, Heating, and Power Purposes

The lift and drift of arched surfaces

How they Behave in a Uniform Current of Air

The Lentz Axial Governor

The burglar and the safe maker

An Electrical Guard of Simple Construction

Morden Ordance

Some Wonderful Weapons Exhibited at the Franco-British Exhibition

Battles in he Sky

The Military Utility of the airship

Coal-Washing Jigs

Some Further Improvements

The Ringed and Smooth Snakes

The Markings of Two Harmless Snakes

A scientific argument against gambling

chinese cattle

The World's production of coal

Cost of concrete flooring

The cat and the plague

The Turnover filter

Electrical notes

Engineering notes

Science notes