Scientific American Magazine
Volume 22, Issue 25You are currently logged out. Please sign in to download the issue PDF.
Features
The Alleghany Bridge at Pittsburgh, Pa, Selecting Durable and Perishable Timber
Scientific Intelligence- June 18, 1870
The Scorpion
Achenbach's Rein Holder
Hotte's Improved Coffeepot
Potash from Feldspar
Molecular Motion
Conduction and Convection of Heat
The School of Mines, Columbia College
Are Tin Fruit Cans a Source of Metallic Poisoning?
Primary School Education
A New Alkaloid in Opium
The Mystery of Sleep
Patent Office Affairs- June 18, 1870
Cincinnati Industrial Exhibition
New Mechanical Movements
Thirty-Ninth Industrial Exhibition of the American Institute
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
Correspondence- June 18, 1870
Business and Personal- June 18, 1870
New Books and Publications- June 18, 1870
