Geography

The Ostrich Parks of Algiers

The Leather Turtle

The Age of Ice

The Beginning and End of the Worlds

A New Meteorite

The South Pass Jetties

Notes on the Consolidation and Durability of the Works, with a Description of the Concrete Blocks and other Constructions of the Last Year

How to Explore for Minerals

Compound Marine Engine

New Marine Railway

Acoustical Fire-Damp Detecter

Mackenzie's Screw Propeller Assistant

A New Rheometric Gas Burner

The Theory of Roller Milling

The Miller, from Gustav Pappenheim's “Popular Treatise on Milling”

An Improved Gas Blowpipe

Measuring Devices

On a Galvanometer for Demonstrating the Internal Current Transmitted through the Liquid within a Voltaic Cell

Density of Chlorine at High Temperatures

The Finest Diamonds in the World

The Currents of Ampere, and on Residual Magnetism

Saponine from the Bark of Quillaia Saponaria

On the Presence of Nitrogen in Steel

On the Dissociation of Chlorine

Gaiffe's New Battery

Detection of Phenol

Anhydrous Air as a Therapeutic Agent

Fermentation and Putrefaction of Mil

Curious Foods

Cements for the Teeth

A New Food for Cattle

Hay as Food for Hogs

Large Flocks Profitable

Standard Requisites for Poultry