Scientific American Magazine
Volume 63, Issue 25You are currently logged out. Please sign in to download the issue PDF.
Features
New Patent Selling Trick
Subscribers, Attention!
The Artificial Production of Rain
Tunnel Railways in New York
Opening of the New Pulitzer Building
An Adjustable Stuffing Box
A Hot Water Ventilating Heater
An Improved Nut Lock
An Automatic Electrical Damper Regulator
Boomer & Boschert's Presses
A Machine to Sand Brick Moulds
Rail Rolling at the Krupp Works, Essen
An Easily Operated Belt Tightener
An Improved Lumber Drier
An Improved Article for Plastering, Tiling, and Cement Work
Mr. Brush's Windmill Dynamo
New Marine Signal
A Pine Apple Grove in Florida
To the North Pole in a Balloon
The "Crystal" Water Filter
The Scientific American- December 20, 1890
Departments
Correspondence- December 20, 1890
Recently Patented Inventions- December 20, 1890
Index of Inventions- December 20, 1890
To Inventors- December 20, 1890
Notes & Queries- December 20, 1890
Business and Personal- December 20, 1890
