
Ella System of Wireless Telephony

Ella System of Wireless Telephony

The Newman Variable Speed Gear

Beveling Angle Bars

A 120,000-Period Alternator

Mechanical Compression of the Ground in the Construction of Foundations

A Novel Tent

New Bogie Transport Cars

Electricity in Hospitals

The Tolli Spring Governor

Measurement of the Specific Magnetization of Diamagnetic or Slightly Magnetic Bodies

Protected Galvanometer

The Chronometric Sphygmograph

A New Apparatus for Automatically Making and Breaking an Electric Circuit

Sterilization of Water

A Lighthouse of Reinforced Concrete

The “Dey” Time Register

Folding Canoes and Jointed Oars

An Apparatus for Indicating the Vibrations of Sound Waves

The New Jungfrau Locomotive

The Graphic Chronometer

Oxygen at Home

A New Form of Friction Clutch

A Novel Thermo-Electric Battery

New Apparatus for Recording the Vibration of Railway Cars