Volume 25, Issue 630supp
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Features
The Age of the Stars
Geology Explained in the Simplest Form
Barberries
Pot Vines
Observations on the Female Form of Phengodes Laticollis Horn
A Home-Made Incubator
An Elephant Hunt in Ceylon
Experiments upon the Color Relation between Phytophagous Larvæ and their Surroundings
Curious Inventions
Optical Illusions
Oil Furnaces at the Forth Bridge Works
To Prevent Rolling of Vessels
Street Railway Sleeping Car
The Development of the Mercurial Air Pump
Magnetic Separator
Chemical and Allied Industries
Group VI.—Fine Chemicals, Alkaloids, Essences, and Extracts