Scientific American Magazine
Volume 41, Issue 6You are currently logged out. Please sign in to download the issue PDF.
Features
The Manufacture of Valves
What to do Next Winter
Probable Opportunities for New Discoveries in Acoustics
The New Bureau of National Survey
How to Preserve Cider
Spirit Photographs
Changes in Photography
The Electrical Alarm Compass
Improved Pressing Machine
A New Railroad Tie
Engineering Inventions
Improved Grinding Mill
New Agricultural Inventions
A New Optical Delusion
Improvement in Saw Gumming
Improved Nut Lock
The Narica
Miscellaneous Inventions
Recent Mechanical Inventions
Communications Received
Departments
Correspondence
Notes and Queries
New Books and Publications
Business and Personal
Index of Inventions
Patents
