Volume 15, Issue 4
You are currently logged out. Please sign in to download the issue PDF.
Features
Great Trial of Agricultural Implements--Mowers, Reapers, Etc--At Auburn, N. Y.
Testing a Turret
Self-Registering Barometer
The Proposed Metric System
Chappell's Adjustable Toilet Glass
Cause of the Failures of the Atlantic Cable
The Rightful Inventor the First to Make the Invention Useful
Variation in CForm Not Patentable
The Roberts Petroleum Torpedo
Biggs and Flinn's Hydrant
Are Iron Safes Safe?
Experiments with Nitro-Glycerin
Patent Claims
Issued from the U. S. Patent Office