German Physicians to the Crown Prince

The Quarantine System of Louisiana

Methods of Disinfection Practiced

Magnetization of Iron

Mr. Case's Carbon Battery

Improved Front Slide Lathe

Mixture for Cleaning Grease Spots

Glass Making

The Development of the Mercurial Air Pump

Class IIa.—Shortened Downward-Driving Pumps

A New Apparatus for Condensing Gases by Contact with Liquids

Making Gold and Silver Salts for Photographic use

A New Vacuum Pan

Brushing Machine for Horses

Kennan's Actinometer

Peculiar Origin of Fires

The Dalrymple-Hay Curve Ranger

The Meteorological Observatory of Mount Ventoux

Glacial Epochs and their Periodicity

The Intelligence of Fish

The Age of the Stars

Sun Dials

Portable Apparatus for Determining Carbon Dioxide in Air

Cellulose for Finings