Features
Vegetable Coloring Matter
Cutlery--United States Industry
Cast-Iron Working in Scotland
A New Jersey Fish Farm
Fell's Railway over Mont Cenis
Herring's Center Vent Water Wheel
Recent American and Foreign Patents
Manufacturing, Mining, and Railroad Items
Editorial Summary
Extension Notices
New Publications
Answers to Correspondents
Betting Against the Weather
The Progress of Mechanical Invention
Savery's Improved Expanding Pulley
Supply of Cold Air to Furnaces Employed for Warming Buildings
The Hoosac Tunnel--Drilling by Machinery
Reform in the British Patent System
Balancing of Machinery--The Centrifugal Hydro-Extractor
Mind Your Business
Patents and Claims
Departments
- Departments
Business and Personal
Correspondence
Patents
