Scientific American Magazine Vol 44 Issue 3

Scientific American Magazine

Volume 44, Issue 3

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Features

Progress of the Brooklyn Bridge

Progress of the Brush System of Electric Lighting

On Aids to Hearing

Harvest Figures

Electro-Metallurgy

Professor Gamgee's Ice Machine

Portable Fountain Water Closet

Improved Tongs

Steamboats for South American Rivers

Howe's Cave

H. C. Hovey

Improvement in Machine Guns

The Face in Health and Disease

Engineering Inventions - January 15, 1881

The Chicago Police Alarm System

A Mysterious Explosion and its Causes

Joshua Rose

Curious Time Measurers

Mechanical Inventions - January 15, 1881

Agricultural Inventions - January 15, 1881

Miscellaneous Inventions - January 15, 1881

Cellar for Manufacturing Ice

Human Footprints in Kentucky Sandstone

Departments

Recent Inventions - January 15, 1881

Notes and Queries - January 15, 1881

Business and Personal - January 15, 1881

Index of Inventions - January 15, 1881