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Features

Prevention of the Sliding Friction of Ball and Roller Bearings

A Portable Recorder for Tests of Metals

By G. C. Henning

Perpetual Motion.—VI

Railway Building in the Nubian Desert

Steam Power in the Fishing Business in Europe

By Charles Theodore Mason

The First-Class Torpedo Boat Injeniero Hyatt

A Hertz Wave Model

On Practically Available Processes for Soldering Aluminum in the Laboratory

Direct Photo-Lithography on Stone

Electrical Notes

Miscellaneous Notes

Engineering Notes

Production of Statuary

A Fight of Polar Bears

Nepenthes X Tiveyi

Common Plants

A Hand-Shaped Carrot

Are Geniuses Long Lived ?

The Manufacture of Tin Plates

By George B. Hammond

John Cabot and the Discovery of Newfoundland

Patents!

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    October 16, 1897

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