Astronomical Telescopes at the Manchester Exhibition

The Age of the Stars

Geology Explained in the Simplest Form

Barberries

Pot Vines

A Home-Made Incubator

Observations on the Female Form of Phengodes Laticollis Horn

Experiments upon the Color Relation between Phytophagous Larvæ and their Surroundings

An Elephant Hunt in Ceylon

Curious Inventions

Optical Illusions

Street Railway Sleeping Car

To Prevent Rolling of Vessels

Oil Furnaces at the Forth Bridge Works

The Development of the Mercurial Air Pump

Magnetic Separator

Chemical and Allied Industries

Group VI.—Fine Chemicals, Alkaloids, Essences, and Extracts

A New Instrument for the Measurement of Radiation

Isolation of Fluorine

A New Photometer for use in the Field

Building Plans and Specifications

Carbon Electrodes in the Decomposition of Acids

Corrosion of Lead Pipes