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Signal Lights for Railroads, and Stopping of Trains - p347
doi:10.1038/scientificamerican07171852-347c
Improvement in Filing and Gumming Saws - p348
doi:10.1038/scientificamerican07171852-348c
Electro-Magnetism to Give Adhesion to the Wheels of Locomotives - p348
doi:10.1038/scientificamerican07171852-348f
The Electrical Properties of Flame—Light - p349
doi:10.1038/scientificamerican07171852-349c
Source of the Nutritious Property of Vegetables - p352
doi:10.1038/scientificamerican07171852-352
