Volume 21, Issue 9
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Features
Plass' Patent Safety Band-Saw
The Early American Improvements in Printing Presses
A Siphon for Draining a Tunnel
Suspension Bridge over the Missouri River
Restoration of Persons Apparently Dead from Drowning
Premature Burial—Its Probabilities
A Good Piece of Engineering
The Relation of the Diameters of Gearing to Friction
The Albany and Susquehanna Railroad
The Removal of the Tariff on Coal
The Law of Hydrostatic Pressure
The Solar Eclipse
The Light Hydrocarbons
The Proposed Tunnel Under the British Channel
Manufacturing, Mining, and Railroad Items
Recent American and Foreign Patents
Answers to Correspondents
Official List of Patents
Issued by the United States Patent Office