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Gilliland's Dioptric Crystal Lenses - pp273 - 274
doi:10.1038/scientificamerican05141853-273b
New Process for obtaining carburetted Hydrogen Gas from Tar - p276
doi:10.1038/scientificamerican05141853-276e
New Process for making Daguerreotype Plates - p276
doi:10.1038/scientificamerican05141853-276g
Recent Foreign Inventions Improved Treatment of Tin Ores - p278
doi:10.1038/scientificamerican05141853-278d
Testing of Lubricators in the Crystal Palace - p280
doi:10.1038/scientificamerican05141853-280