Sanitation of the Panama Canal Zone

Colloids, Suspensions, and Related Phenomena

An American Floating Exposition

"The Scientific American Boy"

Some Curious Uses of American Woods

A Six-Cylinder 400-Horse-Power Racing Gasoline Power Boat

Microphotography

Interesting Microphotographs Obtained without Costly Apparatus

Uniformity of Organic and Inorganic Bodies

Automatic Apparatus for Watering Plants

A Visit to a French Gas Works

Curious Engineering Feat at Niagara

Double Animals

Balance Adjuster for Vehicles

Transmitting Device

An Improved Water-Current Motor

Patent Department

Business and Personal Wants