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Excellent weather for observations of variable colors [in stars].
Agrees to support C. P. Smyth for membership in R.S.L. Objects to C. P. Smyth's statement regarding his discoveries observing at high altitudes. Stresses importance of variable star work.
Success of C. P. Smyth's Teneriffe expedition pleases JH; anxious for declination of nebulae taken from high altitudes. Upset over G. J. Stoney's reproduction of JH's collimating telescope without giving him credit.
Sends JH copy of his address to Royal Geographical Society. Inquires about a means to make astronomical instruments steadier with poles devised by JH.
Discusses the naming of a Plateau of Brussels. Discusses names to go on list; gives JH's and Michael Faraday's recommendations.
Writes that he was not aware of W. R. Dawes's hand in discovery of Hyperion; will note this in R.S.L. records.
Compliments WS on a written address. Describes how to set up a telescope to avoid unnecessary vibration; includes diagram.
Sends apologies to William Lassell for omission of discovery credit.
JH's letter of recommendation for C. P. Smyth misdirected. Little time remains for nomination.
Has heard WS is publishing an English translation of François Arago's astronomical writings. Urges against including Arago's lectures if the Italian translation is indicative of their level of accuracy. Lists numerous errors in that edition. [Marked 'not sent.' Note added to CDraft (RS:HS 25.13.13) states: 'A letter differently worded but noting some of these points, but not all (for particular reasons) if I remember right was sent.'
Thanks JH for advice on several persons and for suggestion concerning the Leviathan. Remarks on R. C. Carrington's circumpolar star work. Writes to R.S.L. Council concerning François Arago's nomination for medal.
'Making perhaps my last attack' on Gamma Virginis. Night air is increasingly detrimental to health.
Visited Liverpool for inspection of School Frigate. Observed Triton. C. P. Smyth will install large telescope at Alta Vista; WS sends excerpt from son's letter. C. P. Smyth also works on spectral line observations.
Wishes to put WS's final version of Gamma Virginis orbit in new edition of his catalogue. Asks questions about Mediterranean.
Finds mistake in JH publication [Outlines Astr.] that assigned discovery of Hyperion to W. R. Dawes and G. P. Bond without crediting William Lassell.
Makes suggestion on freeing the Leviathan from its trapped position.
Sends JH copy of his work on Mediterranean; answers some of JH's questions.