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The Philadelphia and Pittsburg Railroads - p105
doi:10.1038/scientificamerican12201851-105b
Atmospheric Pressure as a Telegraphic and Mechanical Agent - p106
doi:10.1038/scientificamerican12201851-106a
To Promote Adhesion in Locomotive Wheels - p106
doi:10.1038/scientificamerican12201851-106f
Suspension Bridge over the St. Lawrence - p106
doi:10.1038/scientificamerican12201851-106k
Registering Blocks for Printing Oil Cloths - p108
doi:10.1038/scientificamerican12201851-108
To Manufacture Resin Soap and Purify Turpentine - p108
doi:10.1038/scientificamerican12201851-108b
