Features
Trial Trip of the Gunboat Concord
Building the New Navy
Grafting a Dog's Bone on a Boy
Position of the Planets in December
Hatching Cod and Lobster
Work on the Nicaragua Canal
Dredging in Norway
The Similigraph Level
An Improved Toy Pistol
An Improved Wrench
A Device to Supply Cool Water
A Simple Fence-Making Machine
An Automatic Car Coupler
The Launch of the Armored Cruiser Maine at the Brooklyn Navy Yard
Photographic Notes- November 29, 1980
The Electric Underground Railway London
An Improved Flue Cleaner
A Counterbalanced Draw Bridge
Scientific American- November 29, 1980
Departments
- Recommended
New Books and Publications- November 29, 1980
- Departments
Recently Patented Inventions- November 29, 1980
Business and Personal- November 29, 1980
Notes and Queries- November 29, 1980
To Inventors- November 29, 1980
Index of Inventions- November 29, 1980
