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Electric Locomotive for Mines

On the Constitution of the Electric Spark

Electric Pumps for Boilers

Some Notes on Electrotyping, Plating and Gilding

A Tube Tunnel under the Spree

The Glasgow Cable Railway

Working and Hardening Steel

A Modern Gas Power Plant

By Horace Allen

Keith's Automatic Liquid Elevator

Very Convenient Machine for Drawing Water from a Well Remote from the House through a First or Second Story Window

Leftomania

Photographic Waste Material and what to do with It

The Early History of Cast Iron Pipe

Converting Sludge into Fuel

Developer for Films

Electrical Notes

Engineering Notes

Miscellaneous Notes

Pictures of Southwest Africa

The Lipari Islands

By E. O Hovey

Mental Evolution in Man

By R. M. Bucke

Further Experiments on the Liquefaction of Fluorine

By M. Moissan and J. Dewar

Roller Boats

Notes on the Yacht Defender and the use of Aluminum in Marine Construction

By Richmond Pearson Hobson

The Condition of the Laboring Classes in Mexico

Lafcadio Hearn on Japanese Art

The Calcium Carbide Industry

Straightening a Church Spire

Patents!

How Worry Affects the Brain

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