Skip to main content


Shade Trees for the Harlem Speedway

The Reclamation of the New Jersey Meadows

The Green Cross

A Rapid Transit Tunnel between New York and Brooklyn

The Nicaragua Canal

The Modern Version of Supply and Demand

Schemes for Checking Returned Newspapers

Our New Torpedo Boats

A Handy Note Book Holder

An Improved Friction Clutch System

A Horseless Fire Engine

A Portable Electric Drilling Machine

The Harlem River Speedway, New York City

The Stability of the Battleship Indiana

The Sword Walker

By William B. Caulk

To Inventors - February 13, 1897


  • Letters

    Correspondence - February 13, 1897

  • Recommended

    New Books and Publications - February 13, 1897

  • Recently Patented Inventions - February 13, 1897

  • Departments

    Business and Personal - February 13, 1897

  • Index of Inventions - February 13, 1897

  • Notes and Queries - February 13, 1897

  • Patents - February 13, 1897

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
February 13, 1897