Great Trial of Agricultural Implements--Mowers, Reapers, Etc--At Auburn, N. Y.
Testing a Turret
Cause of the Failures of the Atlantic Cable
Chappell's Adjustable Toilet Glass
The Proposed Metric System
The Rightful Inventor the First to Make the Invention Useful
Variation in CForm Not Patentable
The Roberts Petroleum Torpedo
Biggs and Flinn's Hydrant
Experiments with Nitro-Glycerin
Are Iron Safes Safe?
Issued from the U. S. Patent Office
Pitman's Animal Trap
Knoepke's Wash Basin
Notes and Queries