Departments

• Departments

  Changes in the Assistant Commissionership

• Obstacles to the Proposed Erie Canal Improvement

• Automobilism in the German Postal Service

• The Work of the Division of Entomology

• Death of Prof. Pepper

• Our Exports of Iron and Steel

• The Patent Office Exhibit at the Paris Exposition

• M. Trillot on Color Photography

• Some Chinese Vegetables

• A Non-Refillable Bottle

• A Perfected Burner for Incandescent Mantles

• A Rope Armored Engine

• The Asbestos Mines at Thetford, Canada

• Correspondence

• The Expiration of the Edison American Three-Wire Patent

• Ferry Steamer with an Elevating Deck

• The Black-Wall Tunnel, London

• The Cullen Ball-Bearing Rifled Gun

• A French Trolley Automobile

• Notes and Queries

• Index of Inventions

• Recently Patented Inventions

• Business and Personal

• Patents