Features
An Ancient Aqueduct Reopened
The Gaffney Boiler Explosion
Dr. Griscom's Fast
Inconveniences of Electric Street Railways
A Life-Saving Lesson in Physics
Interesting Test of Cast Iron Boiler Heads
Stencil Copying Process
A New Use for the Induction Balance
New Adjustable Gun Stock
New Band Saw Machine
Improved Canceling Stamp
Improved Dividers and Calipers
Novel Cork Extractor
Maiche's Battery
Preparation of Tinned Iron--Tin Plate
Miscellaneous Inventions
Improved Lubricator
Improved Slotting Machine
Home of the American Osprey
Quartz and Marl as Wood Fillers
Mechanical Inventions - July 30, 1881
Departments
- Departments
Recent Inventions
Correspondence - July 30, 1881
New Books and Publications - July 30, 1881
Notes and Queries - July 30, 1881
Business and Personal - July 30, 1881
Index of Inventions - July 30, 1881
