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Congratulates him on his discovery of the parallax of Alpha Centauri. Comments on this and makes suggestions for further examination.
A note to accompany some letters being returned to GA.
Remarks on the significant increase in brightness of the star Eta Cygni, and comments on several other variable stars.
Mother and baby [Margaret and Julia] are doing well; JH asks questions relating to the Grovers giving up the lease on JH's property at Slough.
Convey his thanks to the King for the Order of Merit. Regrets he did not see the King or AH when they visited London recently. Gives astronomical information.
Comments on JD's work in photography; JH goes on to talk about JH's ideas of 'chemical' rays of light.
Sends CW a specimen of JH's 'mercurial photographic process.' JH is pleased that W. H. Fox Talbot received the Rumford medal.
Regarding the revision of the instructions for the magnetic observatories.
A revised set of proposals for Southern constellation reform [see JH's 1840] to be presented to the next B.A.A.S. meeting.