Features
The Mystery of Comets' Tails
Congress—The President's Message—Reports of the Secretaries of the Treasury, War and Navy
The War
Recent American Inventions
Corn Leaf and Grass Paper
Trial Trip of the Steamer Shantung
Nova Scotia Patent Law
Army Rifles
General Butler
Condition of the Patent Office
New Destructive Cannon—Shellproof Vessels
Thatcher's Comet
The Scientific American's Advice to Our Soldiers—Malaria and Its Remedies
Electrical Science
Wages of the Poorer British Classes
Patent Claims - July 20, 1861
To Our Readers
Instructions about European Patents
Allen's Clothes Dryer
Departments
- Letters
Correspondence - July 20, 1861
- Departments
Notes and Queries - July 20, 1861
