Scientific American Magazine
Volume 22, Issue 23You are currently logged out. Please sign in to download the issue PDF.
Features
Air Target Pistol, Improved Peat Machine
What is Energy?
Meat Preserving in Melbourne, Australia
The Cockchafer and its Ravages
Kemlo's Spring-Lock Fishhooks
New York Lyceum of Natural History
A New Spring at Saratoga
Italian Maritime Exposition
Improved Shovel Handle
The Use of Wire Rope in Civil and Mechanical Engineering
Deterioration of Coal by Exposure to the Air
The Problem of City Transit
The Impact of Bodies
Applications for Extension of Patents- June 4, 1870
Beet Root Sugar in The United States
Patent Office Affairs- June 4, 1870
Recent American and Foreign Patents- June 4, 1870
Answers to Correspondents- June 4, 1870
Official List of Patents- June 4, 1870
Departments
Correspondence- June 4, 1870
Business and Personal- June 4, 1870
