The Leather Turtle

The Ostrich Parks of Algiers

Geography

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

Mackenzie's Screw Propeller Assistant

Acoustical Fire-Damp Detecter

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

Saponine from the Bark of Quillaia Saponaria

Gaiffe's New Battery

Density of Chlorine at High Temperatures

On the Dissociation of Chlorine

The Currents of Ampere, and on Residual Magnetism

Detection of Phenol

On the Presence of Nitrogen in Steel

The Finest Diamonds in the World

Anhydrous Air as a Therapeutic Agent

Fermentation and Putrefaction of Mil

Cements for the Teeth

Curious Foods

A New Food for Cattle

Standard Requisites for Poultry

Hay as Food for Hogs

Large Flocks Profitable