The Ingenuity of the Watchmaker
Some of the Methods and Tools That Make This Trade Rank as a Profession
Exploiting the Inventor--IV
A Few of the Good Old Stand-Bys Employed in the Promotion of Stock Frauds Based on "Inventions"
Subduing the Boll Weevil
At Last a Successful Means of Dealing with the Worst Present Mexico Ever Made Us.
The House on the Hill with Front Door in the Valley
Development of American Clays
Annealing with Gas
The Ways, Means and Results of This Often-Mentioned Process
Air Bags for the Airplane that Lands on Water
What Europe is Doing in Aviation--Americans, Please Take Notice!
The Backbone of Naval Power
British Confidence in the Battleship as Exemplified in the "Hood"
Keeping the Construction Laborer Satisfied
The Fuel Case of Coke vs. Coal
The Steamship Pier Problem
Considerations Which Governed the Design of the Twelve New Staten Island Piers
The Automatic Substation from an Economic Standpoint
Correspondence - May 1, 1920
Inventions New and Interesting - May 1, 1920
Recently Patented Inventions - May 1, 1920