Features
Hardening Saws and Other Articles
Dr Velcker on Disinfectants
New Inventions
The British Mint
The Workshops of Clinton Mass
Lake Superior Mining
The Algonquin and Winooski--Official Report of the Chief Engineers
Bellingrath's Pump
Fowler's Packing for Oil Wells
Information Wanted
Coffee
A Happy Family
Patent Claims
Quits Hoop Look
Mechanics
Departments
- Departments
Correspondence
Notes & Queries
