Scientific American Magazine
Volume 27, Issue 21You are currently logged out. Please sign in to download the issue PDF.
Features
Upright Boring Machine
Horsenail Making in London
On Instinct
[Paper read before the British Association, by D. A. Spalding.]
Improved Mop, Head
Apparatus for Extinguishing Sparks
Automatic Boat Detaching Apparatus
Improved Tank Locomotive
Drawings for the Patent Office
Lake of Interest in England for the Vienna Exposition
The Determination of High Temperatures by Sound
New Discoveries Concerning Terrestrial Heat
The Latest Discoveries in the Polar Regions
Improvements in the Manufacture of Silk
Choosing an Occupation for a Young Man
Intolerance in Science
The Conflagration in Boston
Scientific and Mechanical Possibilities
Answers to Correspondents
Recent American and Foreign Patents
Practical Hints to Inventors
Departments
Correspondence
Business and Personal
Notes and Queries
Index of Inventions
