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The Cultivation of Vacant City Lots by the Poor

New Process for Keeping Fruit Fresh

The Most Recent Excavations at Pompeii

The Statistics of Wages and the Cost of Living

Stones in the Head

History and Methods of Testing Building Materials

Winter Fishing in the Ural

Selected Formulæ

Electrical Notes

Miscellaneous Notes

Engineering Notes

Inaccessible Maritime Lights

By Elmer Laurence Corthell

Mechanical Road Carriages

[Cantor Lectures before the Society of Arts.] Lecture II.—Continued.

By W. Worby Beaumont

Some Recent Developments of the Trolley

Defects in Iron Castings

By D. Brown

The Story of Helium


De Rochas' Experiments on Hypnotism


Investigations on Roentgen Rays


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