Features
Scientific Intelligence- June 18, 1870
The Scorpion
Achenbach's Rein Holder
Hotte's Improved Coffeepot
Conduction and Convection of Heat
Potash from Feldspar
The School of Mines, Columbia College
Molecular Motion
A New Alkaloid in Opium
The Mystery of Sleep
Are Tin Fruit Cans a Source of Metallic Poisoning?
Primary School Education
Thirty-Ninth Industrial Exhibition of the American Institute
Cincinnati Industrial Exhibition
New Mechanical Movements
Patent Office Affairs- June 18, 1870
Recent American and Foreign Patents- June 18, 1870
Answers to Correspondents- June 18, 1870
Official List of Patents- June 18, 1870
Applications for the Extension of Patents- June 18, 1870
Departments
- Letters
Correspondence- June 18, 1870
- Reviews
New Books and Publications- June 18, 1870
- Departments
Business and Personal- June 18, 1870
