Volume 7, Issue 5
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Features
Notes on Military and Naval Affairs
The Stevens Battery
Petroleum--Refineries--Explosions
Valuable Receipts
Miscellaneous Summary
A Telegram
Our New Iron-Clad Navy
New Iron Bridge at Harlem--A Great Planing Machine
Emery's Cotton Gin
The London Exhibition
Thanks to Our Friends
Inventions of the Day
Interesting Reminiscences
Patent Claims
Issued From The United States Patent Office