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A Gigantic Electric Shipyard Crane

By Alfred Gradenwitz

Recent Experiments with Materials which Retard the Activity of Portland Cement

By R. C. Carpenter

Leather from Seal Skins

By Charles H. Stevenson

An Accidental Official Forest Fire

The Raw Materials used in Silvering and Methods of Testing

Electric Overhead Traveling Jenny

Electric Traction on Railroads–Switzerland

A Gasoline Warship Launch

Portable Oil Engine with Reversing Gear

Illuminated Missal used for Stained Glass

The Molecule, the Atom and the New Theory of Matter

The New Political Economy

Prizes Offered by the Paris Academy of Sciences for 1905

On Sea Charts Formerly used in the Marshall Islands. with Notes on the Navigation of these Isl Anders in General

By Winkler

Experimental Electrochemistry

By N. Monhok Hopkins

Contemporary Electrical Science

The Mosquito Question

By Quitman Kohnke

Forestry in California

Engineering Notes

Science Notes

Electrical Notes

Trade Notes and Recipes

Departments

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    Correspondence - February 11, 1905

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Why Do Facts Fail?

Why Do Facts Fail?

Deconstructing Denial