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Proposes a dry place for the apparatus for their laboratory and draws a plan for CD’s criticism.
Price has found black sediment in his tea, which was attracted to a magnet.
Asks CD to do an experiment for him.
Has found a curious stone in his fire.
Price’s iron in tea measured 13 per cent.
Saw a mineral salesman, but he had nothing CD does not already have.
EAD has a piece of petrified sponge and some curious coal that John Price pulled out of his fire.
Griffith’s Animal kingdom [Griffith, Edward, et al. 1827–35. The animal kingdom arranged in conformity with its organization, by the Baron Cuvier, … with additional descriptions of all the species hitherto named, and of many not before noticed. 16 vols. London] just being published. He is sure CD would like it.
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Concludes original letter lost. Impossible to do any further work for the Encyclopaedia Metropolitana. Hopes FL will write the article.
Their letters have missed more than once, and JH's last letter is now at the Return Office. Would like to see this letter to learn JH's views on the article on Heat. Gives own ideas how article should be written, too busy himself, so hopes JH can write it, or does he know any other person?
Sends JH a sketch of an experiment already made.
Apologizes for delay in writing. Describes JH's travels across Europe back to England. Is sending GP copies of JH's papers in physics, mathematics, and astronomy, especially double stars. Describes a new instrument, a floating collimator, described by Henry Kater at the R.S.L. [Rough notes for a later letter on the back of part of this one.]
Presented WR's paper on a new photometer to R.S.L. Discusses how objections may be avoided. Believes [John] Leslie's photometer should be thrown aside.
Still anxious to become a fellow of the R.S.L. Thanks JH for offer. Would like to be elected before end of present session.
Asks WS for account of the performance of his new [Josef] Fraunhofer telescope. Corroborates WS's double star motion data, except for 70 Ophiuchi, where JH and [James] South find no motion. Asks for observational targets and urges care in WS's observational technique. Mentions WS's intention to undertake celestial zone with [F. W.] Bessel. Describes [Henry] Kater's 'floating collimator.'