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Asks JH to tell her where to find his newly published works on the action of light on chemical substances. Rome is not intellectually stimulating. Describes summer in Venice.
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Sending papers on actinochemistry (photography). Discusses [James] Forbes's viscosity theory, nebulae of Southern Hemisphere, great refractor at Collegio Romano, and Lord Rosse's telescopes.
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Will be in London and hopes to see JH. Thanks for his letter and the promise of sending his papers on light. Also wants information on [Louis] Daguerre's work.
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Thanks JH for papers on light and photography. Enjoyed her visit to Collingwood. Feels privileged to be godmother to JH's daughter.
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