
The SciencesFebruary 4, 1888
The Development of the Mercurial Air Pump
Class IIa.—Shortened Downward-Driving Pumps

The Development of the Mercurial Air Pump
Class IIa.—Shortened Downward-Driving Pumps

The Development of the Mercurial Air Pump

The Development of the Mercurial Air Pump

The Diseases of Dynamos

Recent Progress in Dynamo Electric Machines

The First Telephone

On the action of Magnets on Liquid Jets