Features
Improved Automatic Fire Escape
Curious Animal Relationships
The Science of Play
The Duties of the Commissioner of Patents and the Supervising Powers of the Secretary of the Interior
Amateur Observations of the November Meteors
Imitation Terra Cotta
Influence of the Spinal Cord on Bodily Temperature
Another Traveling Expedition
Allan's Pressure Gauge
Improved Double Shedding Harness Jacquard Loom
A New Dredging Apparatus
Improved Ship's Speed Indicator
New Electrical Machines
Improved Window Fastener
Improved Safety Alarm and Door Bell
The Cosmograph
Orchids
New Miscellaneous Inventions
Recent American and Foreign Patents
New Mechanical and Engineering Inventions
New Household Inventions
Communications Received
Departments
- Departments
New Books and Publications
Notes and Queries
Business and Personal
Index of Inventions
