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Features

One Thousand Ton Hydraulic Shearing Machine

Woodite

Heating Cities by Steam

By Charles E. Emery

The Locks of the Panama Canal

Gas Fired Steam Boilers

An Automatic Intermittent Siphon

Carey Lea's Photochloride of Silver

By William Lang

Methods of Teaching and Learning Modern Languages

By Charles F. Kroeh

The Chinese Wall a Fact

By J. H. Roberts

Notes on Ethereal Oils

Influence of Magnetism upon Crystallization

By C. Decharme

Experimental Optics

Underground Haulage by Electricity

A New Antiseptic

The Shone Hydro-Pneumatic System of Sewerage

God's Universe

The Saturnia Maia Moth

Ancient Microscopes

Building Plans and Specifications

Hair Tonic

The Girod Cosmograph

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March 31, 1888

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