Features
Transformation of Physical Forces
Recently Proposed Patent Legislation
Prof Pickering's Early Experiments in Telegraphing Sound
The Nation's Great Problem, How to Cool a Cellar, and more
Progress of Silk Culture in this Country
Car Coupling
Improved Hinge
Shaving Mirror
Door Securer
Water level Indicator
Pneumatic Pressure Relief Governor
Collision Balls and Harmonic Impact
Polarized Light.—Norremberg Doubler and the Study of Thin Films
Winding Engine for Australia
Thermometer with Electric Alarm
Child's Carriage
Drain Tile Protector
Railway Cross Ties
Rare Specimens of Marmosets
Engineering Inventions - July 17, 1886
Agricultural Inventions - July 17, 1886
Miscellaneous Inventions - July 17, 1886
Departments
- Letters
Correspondence - July 17, 1886
- Recommended
New Books and Publications - July 17, 1886
- Departments
Notes and Queries - July 17, 1886
Business and Personal - July 17, 1886
Index of Inventions - July 17, 1886
