Volume 11, Issue 4
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Features
Fairbairn on Steam Boilers
The Crops--Bi-Monthly Report of the Agricultural Department
Recent American Patents
Photographic Items
New Method Of Printing
Boring Tools
Ingham University
Cost of Patents
The Mackay Gun
Appearance of the Sun From the North Pole
Molasses
Financiering
Versatility and Skill of American Mechanics
Make Haste Slowly
Wages Paid for Skilled Labor
Patent Claims
Issued from the United States Patent-Office
The Hecker and Waterman Experiments
The Monitor System
Rebel Iron-Clads
To Our Readers
Portable Musquito Net
Scientific American for 1864
Volume Eleven, New Series