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