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Needs a copy of Euclid from JH; quotes some Latin poetry of Nicholas Copernicus.
When he met him in Paris some years ago JH was on his way to Etna. Could he direct him to a published account of his observations?
Congratulates TR on his volume of astronomical observations. Skeptical about alleged changes in Orion nebula. Feels better telescopes and drawings would be needed to confirm this. Discusses own double star observations.
Has seen JH's article on light in an encyclopedia, and writes to ask if JH would send JU a copy of it.
Regarding the monetary affairs of his sister-in-law. Has had discussions regarding his machine. Has just commenced writing a pamphlet on the state of science in England. Everyone has been asking for JH.
Will be in town on Thursday to execute the deed of attorney. Is glad to hear that Arthur Wellesley (1st Duke of Wellington) has taken an interest in the machine. Remarks on his pamphlet State of Science in England. Alterations at Slough.