Departments

• Departments

  Revival of the Second-Class Mail Matter Question

• The Problem of San Francisco Bay

• The Production of Gold

• A Great Russian Pipe Line

• The Utilization of Wastes for Power

• An Assumed Inconstancy in the Level of Lake Nicaragua; A Question of Permanency of the Nicaragua Canal

• A World's Record in Bridge Building

• Two Forms of a New Dish-Washing Machine

• A Mechanical Stoker for Furnaces

• The Progress of Practical Aeronautics during 1899

• Casting Pig Iron by Machinery

• The Round-Lap Bale Method of Shipping Cotton

• A Tool for Transplanting Buds

• An Improved Apparatus for Raising Liquids

• The Xiphopages, Rosalina and Maria

• Correspondence

• Recently Patented Inventions

• Index of Inventions

• New Books, Etc.

• Notes and Queries

• Business and Personal

• Patents