Skip to main content


The Roosevelt Deep Drainage Tunnel Finished

By C. Bond Harpole

The History of the War, The Trans-Atlantic Flight and more

The Prevention and Cure of Hookworm

Causes and Extent of the Infection, and. How It Is Being Stamped Out

Hunting Submarines with a Sound Detector

American Invention That Played an Important Role in the War Against the U-Boat

By Brewster S. Beach

Reconstruction in Europe--VI

The Status of the British Railways

By C. H. Claudy

Exploring by Airplane

Some Opinions on the Possibilities of Winged Exploration Parties of the Near Future

By Eric A. Dime

America's Great Effort in Ordnance--I

Supplying Our Two Million Men in France with Artillery, Machine Guns and Rifles

U. S. S. "New Mexico"

A Description of the World's First Electrically Propelled Battleship

By Henderson B. Gregory

Foreign Trade in Furniture

Fuel from Household Waste, Storage of Coal Under Water and more


  • Departments

    Correspondence - April 5, 1919

  • Inventions New and Interesting - April 5, 1919

  • Recently Patented Inventions - April 5, 1919

Purchase To Read More

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