Thanks for photograph of the moon.
Thanks for photograph of the moon.
Has not been able to go to Kew Observatory yet. The photoheliograph has to await John Welsh's return from Scotland. A reflector with a diagonal mirror would be suitable for celestial objects. Has now removed to Cranford.
Thanks WW for letters. Has been visited by [ [J. B. L.] Foucault; impressed by Foucault's instruments. Notes large number of sunspots.
Is honored by his kind invitation to visit him, which he hopes to accept. Has great respect for JH's work.
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