Features
Report of the Chief of the Bureau of Ordnance
The Plants and Animals of the Petroleum Rocks
Punched and Drilled Holes in Plates
Turning Tools
Polytechnic Association of the American Institute
New Books and Publications
Recent American Patents
Miscellaneous Summary
Notice to Subscribers
Dodge's Adjustable Caster for Sewing Machines
Special Notices
The Torpedo Ship
Charcoal
What is Utility
Steam on Common Roads
Patent Claims
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Correspondence
Notes & Queries
Patents
