Features
The Scientific American Supplement
A Woman's Work for Science
The Patent Office Appropriation
Street Telegraph Lines
Free Passes at the Centennial
The Practical Uses of the Spectroscope
The Industrial Uses of Asbestos
Improved Electro-Magnetic Dental Engine
Improved Leather and Cloth Enameling Machine
Improved Process of Capsuling Medicaments
New Process of Preserving Wood
Estimating the Value of Bone Black
Practical Mechanism - April 22, 1876
Miller's Improved Hose Carriage
Improved Grain Cleaner
Improved Method of Obtaining Water
The Filamentous: Gurnard
The Red Fire Fish
The Horticultural Hall at the Centennial Exhibition
Recent American and Foreign Patents - April 22, 1876
New Woodworking and House and Carriage Building Inventions
New Agricultural Inventions - April 22, 1876
New Household Articles - April 22, 1876
New Mechanical and Engineering Inventions - April 22, 1876
Communications Received - April 22, 1876
Departments
- Letters
Correspondence - April 22, 1876
- Departments
Notes and Queries - April 22, 1876
Business and Personal - April 22, 1876
Index of Inventions - April 22, 1876
