Volume 29, Issue 15
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Features
Sand and Mud Baths
Discovery of an Old Boot and Shoe Sewing Machine Patent
The Financial Crisis
The Mechanics of the Brain
How Pianos are Injured
The Fair of the American Institute
Scientific and Practical Information - October 11, 1873
Improved Boring Machine
Checker Lozenge Package
Sprague's Combined Sash Lock, Sash Holder, and Weather Strip
The Evaporation of Water by Plants
Up the Amazons
No. 1
Letter from United States Commissioner Professor R. H. Thurston
Number 13