Volume 29, Issue 8
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Features
Spontaneous Generation
Recent Geological Investigations
The Base Line of Astronomy
That "Dastardly Outrage" Again
Efflux of Steam
Ezekiel Page
Scientific and Practical Information - August 23, 1873
Harris &Hewitt's Patent Sash Cord Fastener
Norway and Sweden
The Great Exposition--Letter From United States Commissioner Professor R. H. Thurston
A New Domestic Motor
The Patent Revenue Cigar Box
Perambulating Cot
The Cooper Portable Engine
The First Automatic Fan
Decisions of the Courts - August 23, 1873
Recent American and Foreign Patents - August 23, 1873
Value of Patents and How To Obtain Them
Practical Hints to Inventors