Volume 30, Issue 1
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Features
The Report of the Chief Engineer of the Navy
Look to Your Stoves
Louis Agassiz
The Manufacture of Earthenware
Note Relative to the Estimation of the Commercial Value of Coals Containing Large Quantities of Ash
The Albert Iron Bridge
Worcester Japanese Porcelain at Vienna
Automatic Brake
Improved Plow
Improved Furniture Casters
Scientific and Practical Information - January 3, 1874
Samuel Nelson
Astronomical Notes - January 3, 1874
Decisions of the Courts - January 3, 1874
United States Circuit Court---Northern District of Illinois. PATENT MACHINE FOR PRESSING AND STAMPING SHEET METAL. REVOCATION OF PATENT.—FRANK STURGES, OLIVER H. LEE, AND WILLIAM S. POTWIN vs ISAAC VAN HAGEN.
Value of Patents, and How to Obtain Them - January 3, 1874
Practical Hints to Inventors.
Commissioner's Decisions - January 3, 1874
Recent American and Foreign Patents - January 3, 1874
Answers to Correspondents - January 3, 1874
How to Obtain Patents and Caveats in Canada - January 3, 1874
Canadian Patents - January 3, 1874
LIST OF PATENTS GRANTED IN CANADA
ON DECEMBER 10, 1873.