Machine Grinding

The Progress of Mosquito Extermination

Santos-Dumont and the Exposition Authorities

A Vegetable Butter

Historic Forest Fires

The Preparation of Cereal Foods

The Submarine Torpedo Tube

The Gordon Bennett Cup Race

By Special Correspondent of the Scientific American

A Curious Formation of Horse's Skull

The New Nemethy Flying-Machine and the Principle of Its Construction

Improved Screwdriver

Business and Personal Wants