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The Development of the Torpedo-Boat Destroyer

By W. J. Harding

Pavements for Residence Streets

Bleaching of Flour

Water Power at High Pressure

Cement Mortar and Concrete: Their Preparation and use for Farm Purposes

Molding and Curing Posts

By Philip L. Wormley

A Simple Camera Shutter

Recent Advances in Wireless Telegraphy

I. Introductory

By J. Erskine-Murray

Harvard's Botanic Garden

By Mary Caroline Crawford

Hybridization of Plants

The Direction in which Voluble Plants Twine

Cost of Running a Motor Delivery Tricycle


The Pressure of Explosives. Experiments on Solid and Gaseous Explosives


By J. E. Petavel

The Burning Coal Beds of Utah

Electrical Notes

Engineering Notes

Trade Notes and Formulæ

Science Notes


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