photoheliographs

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• Dallmeyer, John Henry — ▪ British manufacturer born Sept. 6, 1830, Loxten, Westphalia [Germany] died Dec. 30, 1883, at sea off New Zealand       British inventor and manufacturer of lenses.       Showing an aptitude for science, Dallmeyer was apprenticed to an Osnabrück …   Universalium