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Scientific American
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Scientific American Magazine
July 1892
Volume 67
,
Issue 5
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Features
Is Perpetual Motion Possible?
The Camera at Homestead
Position of the Planets in August
A Machine to Holystone a Vessel's Deck
A Comfortable Reading Chair
An Improved Car Coupling
An Easily Regulated Electric Motor
The Viaduct Du Loup
The Oscillating Disappearing Turret
Mechanical Singing Birds
The Baker Submarine Boat
Polychrome Projections by Means of Uncolored Photographs
Departments
Correspondence- July 30, 1892
Recently Patented Inventions- July 30, 1892
Index of Inventions- July 30, 1892
To Inventors- July 30, 1892
Business and Personal- July 30, 1892
Notes and Queries- July 30, 1892
Patents- July 30, 1892
