Table of contents
Recently Patented Inventions
Business and Personal
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How to Estimate our Work on War Vessels - p304
doi:10.1038/scientificamerican11151890-304a
Lake Steamers Built by a Cleveland Firm - p306
doi:10.1038/scientificamerican11151890-306
A Machine for Threading and Cutting Off Pipes Etc. - p306
doi:10.1038/scientificamerican11151890-306a
An Improved Head-Light for Locomotives - p307
doi:10.1038/scientificamerican11151890-307b
The United States Collection of Standard Weights and Measures - pp311 - 313
doi:10.1038/scientificamerican11151890-311