Volume 15, Issue 5
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Features
Improved Brick Machine
Miscellaneous Summary
The Children of Mechanics
The Steam Engine Indicator
Spaulding's Patent Broom Head
A Strange Inconsistency
The Heated Term--How to Keep Cool
Important Decision in Interference Case
The Markets
Importance of Bags
The Needle Gun
Our Commercial Marine
The Production of Timber
Patent Claims
Issued from the U. S. Patent office