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Electric Launches at the Columbian Exposition

More Engineers Needed for the Navy

The Columbia, the New Commerce Destroyer

An Extensible Electric Light Support

An Improved Rotary Engine

A Readily Adjustable Camera Stand

Improved Cross-Cutting Saw

A Coin Holding and Delivering Device

A Quick and Sure Chicken Beheader

New Fire Alarms

A Metallic Bookcase

Improvements in Shapers

Four Hundred Horse Power Mill Engine

Securing Propeller Blades to the Hub

A Simple Gas Meter Connection

The Triple-Screw War Ship Columbia

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November 25, 1893

Science for the Modern World