Features
Carpets and Knitted Manufactures of Amsterdam, New York
On the Heating of Water and Boilers--Curious Explosive Phenomena
On Cotton Seeds
Frictional Gearing - April 27, 2012
Portland Cement
Human Hair and Its Substitutes
Belting and Pulleys
Double Plows
The Air Filter
The Utilization of Water in Its Relation to Public Health
On the Reasons Which Have Caused the Adoption of the New Atomic Weights
Photographic Toilet and Hat Rack
Folding Chair, Lounge, and Bed
Recent American and Foreign Patents - April 27, 2012
Departments
- From the Editor
Answers to Correspondents - April 27, 2012
- Recommended
New Books and Publications - April 27, 2012
- Departments
Business and Personal - April 27, 2012
Notes and Queries - April 27, 2012
Index of Inventions - April 27, 2012
