Volume 6, Issue 15
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Features
Improved Flour Bolts
Notes on Military and Naval Affairs
Natural Curiosities of California
Polytechnic Association of the American Institute
Chemical and Physical Modifications of the Atmosphere Consequent on Habitation
Neill's Combined Knife, Fork and Spoon for the Army
What Can Be Done for Inventors.--Advice Gratis and Advice for Pay
The Reason Why the Artillery Was Not in the Battle of Newbern--Improvement in Signals Suggested
A New Leaf Turned Over in the Polytechnic Association
The Proposed Tax on Patented Articles
Recent Progress of the Photographic Art
Dialysis Applied to the Arts--Silica in Tanning and Preserving Stone Buildings
Recent American Inventions
Patent Claims
Issued from the United States Patent Office