Scientific American Magazine
Volume 93, Issue 24You are currently logged out. Please sign in to download the issue PDF.
Features
The Growth of our Railroad System
Guard Rails in the Subway
An All-Day Race between Battleships
The Mysteries of the Ocean Bed
The Bacterial Purification of Sewage
The New Gasoline Motor Car
The Flax Industry of To-Day
Progress of the New Jersey Tunnels and Subways
The Lifting Power of a Screw Propeller for Aeronautical Work
A Novel Method of Dog-Shearing
The Salmon Fisheries of the Northwest
Depth Gage for Brace Bits
An Improved Excavator
Business and Personal Wants
Departments
The Heavens in December - December 9, 1905
Recently Patented Inventions - December 9, 1905
Notes and Queries - December 9, 1905
Index of Inventions - December 9, 1905
Patents - December 9, 1905
