Professor Morse's Official Report upon the Telegraphy of the French Exposition
On Manganese and Some of Its Compounds
Artificial Light from the Pinewood Chip to the Gas Chandelier
The Calabash Tree
Swedish Cooking Appliances
Wells' Improved Eccentric for Steam Engines
The Growth of Monopolies
The Metric System
Report of the Special Commissioner of Revenue--Tinkering the Income Tax
The Use of Eyes
Canal Through the Isthmus of Darien
Madder Extracts and their Application in Topical Dyeing
The Preservation of Meats without Salt
New Facts about the Preservation of Timber
A paper read by John Wise, Aeronaut, before the Franklin Institute, Dec. 15, 1869.
Answers to Correspondents- January 8, 1870
Recent American and Foreign Patents- January 8, 1870
Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.
Official List of Patents- January 8, 1870
Issued by the United States Patent Office. For the Week Ending Dec. 30, 1869. Reported Officially for the Scientific American.
Applications for Extension of Patents- January 8, 1870
Correspondence- January 8, 1870
New Books and Publications- January 8, 1870
Business and Personal- January 8, 1870