Skip to main content


A Cruiser without Funnels

Ventilation of Passenger Coaches

A Successful Friction Clutch

A Tribute to Roosevelt's Technical Judgement

Electricity - March 13, 1909

Science - March 13, 1909

Engineering - March 13, 1909

The Projector in Surgery

Gas-Driven Battleships and Cruisers

Stress in a Vacuum Balloon

A Peculiar Optical Phenomenon

The Airship of the Future

Curiosities of Numbers

The Earthquake in Italy

Did the “Republic” Carry Searchlights?

Aeronautical Notes


The M'Call's Ferry Hydro-Electric Power Plant

By William Allen

Test of the Bell Tetrahedral-Cell Aeroplane in Nova Scotia

A Wirelessly-Controlled Torpedo

A Cheaply-Constructed Fireless Cooker

By Edward Thorpe

An Electrical Fireless Cooker

By Frederick E. Ward

Furnishing the Workshop.--IV

By I. G. Bayley

Handy Man's Workshop

Home-Made Brass Furnace

By Albert F. Bishop

Unscrewing a Tight Jar Top

By A. R. Van Der Veer

Construction of a Selenium Cell

By J. Carlton Paulmier

Home-Made Blowpipe

By F. D. Sweet


  • Departments

    Recently Patented Inventions - March 13, 1909

  • Notes and Queries - March 13, 1909

  • Index of Inventions - March 13, 1909

  • New Books, Etc.

  • Patents - March 13, 1909

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
Scroll To Top

Dwindling Supply. Increasing Demand.

Dwindling Supply. Increasing Demand.

Solving the Water Crisis