Volume 9, Issue 12
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Features
Impertinence of the Ordnance Department Toward Inventors
Miscellaneous Summary
Taylor's Automatic Churn Power
Manganese
The Fair of the American Institute
Improvement in Vessels of War
Hands Versus Wheels
Piece Work
The Hammer Mightier Than the Pen
Zinced Iron for Ship's Plates
Molecular Mobility of Gases
Woody Fiber--Vegetable Parchment
Penetrating Power of Projectiles
Recent American Patents
400 Unfortunates
Patent Claims
Issued From the United States Patent-Office