Features
What to do Next Winter
How to Preserve Cider
Spirit Photographs
Changes in Photography
The Electrical Alarm Compass
Probable Opportunities for New Discoveries in Acoustics
The New Bureau of National Survey
Improved Pressing Machine
A New Railroad Tie
Improved Grinding Mill
Engineering Inventions
New Agricultural Inventions
A New Optical Delusion
Improved Nut Lock
Improvement in Saw Gumming
The Narica
Miscellaneous Inventions
Recent Mechanical Inventions
Communications Received
Departments
- Departments
Correspondence
Business and Personal
New Books and Publications
Notes and Queries
Index of Inventions
Patents
