The Shapes of Leaves and Cotyledons

Bustards at the Zoological Gardens

Astronomy

Objects for the spectroscope.

Honeysuckles

Velocity of the Wind on the Eiffel Tower and at the Forth Bridge

Modern French Artillery

The Gun Factory of the Cail.

The Morgan Engineering Works

Sailing Ships

Great Tower for London

The Vyrnwy Aqueduct to Liverpool

The Asphalt Industry in France

Automatic Gas Retorts

The use of Gas for Cooking Purposes

Early Printing in America

A Simple Barker's Mill

A Sewing Machine Motor for Amateurs

The Fixation of Nitrogen

Building Plans and Specifications

Patents

Useful Engineering Books