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The Latest in Photography.—Photoglyphic Engraving - p113
doi:10.1038/scientificamerican12181858-113
Influence of Out-Door Air and Sunshine on Longevity - p115
doi:10.1038/scientificamerican12181858-115b
Notes on the Progress of the Puddle and Screw—No. 5 - p120
doi:10.1038/scientificamerican12181858-120