Features
Medical Progress in 1877
Stick to the Law
Is Gravity a Mode of Motion?
The Mail of the Metropolis
Heinrich Daniel Ruhmkorff
Patent Office Employees to be Disgraced
Folding-Door Fireproof Safe
Modern Torpedo Warfare
Smith's Improved Windmill
A New Digging Machine
Communications
Making Callipers
Powell's Improved Cotton Harvester
Improved Portable Cider Mill
The High School of Kolapore, India
The Long-Necked Chelodine
Whales and Whalebone
A Fowl Monstrosity
Beard's Thill Coupling
Astronomical Notes
Wants and Business Inquiries
Departments
- Departments
Notes and Queries
Business and Personal
Index of Inventions
Patents
