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Scientific American Magazine Vol 38 Issue 21

Scientific American Magazine

Volume 38, Issue 21

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Features

Improved Feed Water Heater and Purifier

The Black Silk Deception

A New Opportunity to Secure Foreign Trade.-- Scientific American Export Edition

Spirit Strings and Morbid Minds

Our Naval Necessities

The Accident to the Machinery of the Steamer Old Colony

The Transit of Mercury and the Inter-Mercurial Body

What are the Causes that Affect the Taste of Drinking Waters?

Communications

Our Simian Visitors

The Injector

Winterburn's Regulator for Oil Stove Wicks

Improved Differential Pressure Regulator

Improves Farm Gate

Waterspouts

Fangs of Serpents

C. Few Seiss

Improved Spring Bed

Improved Grinding Mills

Proposed Bridge Over the Thames

M. Victor Regnault

Machinery Vs. Manual Labor

Bastard Patent Rights

Astronomical Notes - May 25, 1878

Berlin H. Wright

Communications Received

Departments

Business and Personal - May 25, 1878

New Books and Publications

Notes and Queries - May 25, 1878

Index of Inventions - May 25, 1878

Patents - May 25, 1878