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