Features
Tripler's Railroad Tie
Scientific Use of the Imagination
The Power of Modern Skill in the Mechanic Arts
The Great Suspension Bridge between New York and Brooklyn--Progress of the Work--Its Present Condition--Some Account of the Method of Procedure
Blackboards
Hutchinson's Locking Grate Bar
The People Who Attend Fairs
Power of Prime Motors
Rating Steam Engines
The World's Work, and Its Moral Necessity
Chemistry at the Fair of the American Institute
Death of Three Distinguished Chemists
Transportation of Fresh Meats and Fruits, Etc., through Long Distances--The Davis Refrigerator Car
Diamond Mining in South Africa
Answers to Correspondents- November 12, 1870
Applications for the Extension of Patents- November 12, 1870
Official List of Patents- November 12, 1870
Recent American and Foreign Patents- November 12, 1870
Departments
- Letters
Correspondence- November 12, 1870
- Departments
Business and Personal- November 12, 1870
