Features
What is Energy?
Meat Preserving in Melbourne, Australia
The Cockchafer and its Ravages
Kemlo's Spring-Lock Fishhooks
Italian Maritime Exposition
A New Spring at Saratoga
New York Lyceum of Natural History
Improved Shovel Handle
The Impact of Bodies
The Problem of City Transit
Deterioration of Coal by Exposure to the Air
The Use of Wire Rope in Civil and Mechanical Engineering
Patent Office Affairs- June 4, 1870
Applications for Extension of Patents- June 4, 1870
Beet Root Sugar in The United States
Answers to Correspondents- June 4, 1870
Recent American and Foreign Patents- June 4, 1870
Official List of Patents- June 4, 1870
Departments
- Letters
Correspondence- June 4, 1870
- Departments
Business and Personal- June 4, 1870
