Scientific American Magazine Vol 61 Issue 2

Scientific American Magazine

Volume 61, Issue 2

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Features

Condition and Needs of the Navy

An Improved Draught Equalizer

Improved Foot Best for Radiators

A Chair for Use on the Sea Beach

An Improved Grindstone Tool Holder

An Improved Sash Holder

The New Additions to the Navy

An Improved Oyster Pail

Tare's Improved Wash Boiler

Sims-Edison Torpedo

Curiously Worn Gear Wheel

Secondary Battery

Geo. M. Hopkins

An Improved Steam Engine

Maternal Instinct in Spiders

M. L. Pike

Accident on The Housatonic Railroad

To Inventors- July 13, 1889

Departments

Recently Patented Inventions- July 13, 1889

New Books and Publications- July 13, 1889

Businesss and Personal- July 13, 1889

Index of Inventions- July 13, 1889

Notes and Queries- July 13, 1889