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The Route to California through Nicaragua - p330
doi:10.1038/scientificamerican07061850-330f
Great Speed on the Utica and Schenectady Railroad - p330
doi:10.1038/scientificamerican07061850-330g
The Benefits of Coffee as an Article of food - p330
doi:10.1038/scientificamerican07061850-331b
Report of the Scientific Committee to Investigate Pame's Light - p332
doi:10.1038/scientificamerican07061850-332
Ink that Resists the Action of Acids and Alkalies - p332
doi:10.1038/scientificamerican07061850-332e
Great Building.—Exhibition of the Industry of all Nations - p333
doi:10.1038/scientificamerican07061850-333c
New Agents for the Scientific American - p335
doi:10.1038/scientificamerican07061850-335b
History of Propellers and Stearm Navigation - p336
doi:10.1038/scientificamerican07061850-336a