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Adjusting the Number and Depth of Paddle-Wheel Blades - p107
doi:10.1038/scientificamerican12151855-107b
Foot Prints of Reptiles in the Coal Strata of Pennsylvania - p107
doi:10.1038/scientificamerican12151855-107f
Awards to American Exhibitors at the French Exhibition - p108
doi:10.1038/scientificamerican12151855-108d
Protection of Designs for Articles of Manufacture - p109
doi:10.1038/scientificamerican12151855-109
The Manufacture of Coke.—Railroad Fuel - p109
doi:10.1038/scientificamerican12151855-109a
British Association for the Advancement of Science.—No. 3 - p110
doi:10.1038/scientificamerican12151855-110
Gratitude to Improvers of the Iron Manufactures - p110
doi:10.1038/scientificamerican12151855-110a
