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Recommends buying optics for 7.5-inch telescope from Metz and Mahlers in Munich and having those mounted in London.
Has received a request from the Admiralty to order a new telescope for the Cape observatory; at the same time, JH has received an unsolicited offer of a lens. JH seeks advice and information from GA.
Both JH and his wife, Margaret, are very concerned about the health of Madame Gerlach, the aunt of NS. Details are provided.
A letter of even greater urgency about the very serious state of health of Madame Gerlach, the aunt of NS [see JH's 1843-10-20]. Madame Gerlach is living with the Herschels [as tutor? or governess?].
As JH has not heard from NS, he has arranged for Madame Gerlach to stay with Mrs. Mason, now living in part of JH's former residence at Slough. But under no circumstances can Madame Gerlach return to her duties with JH's family.
Returns with many thanks E. C. Hawtrey's translations from Homer and Kallinos. Both are beautifully done. Comments on these and the meters suitable for English ears.
Invites FB and his sister for a visit to Collingwood, where FB and JH can most easily complete the work of charting the southern stars.
Describes his view of the Great Comet of 1843.
Was unable to visit FB; JH is suggesting some options for FB dealing with the star map, and whether it needs to go to the B.A.A.S. for approval.
Sends along Frederik Kaiser's observations of Halley's Comet; [Robert] Everest is upset with JH because JH had signed a letter of support for a grant for T. B. Jervis.
Looks forward to the possibility of a visit from RJ.
Regrets he will be unable to visit Cork for the B.A.A.S. meeting, but is conscious of the honor of the invitation.
Urges doubling number of lunar observations.
WM is not the first person to write to JH on the application of photography to astronomy. Comments on the question and gives some of his own views on the subject.
Comments on the value of meteorological observations that TP proposes to undertake.
Is inquiring, on behalf of the Admiralty, about ordering an equatorially mounted achromatic telescope for the Royal Observatory at the Cape of Good Hope.
Approves GD's modification of driving wheel [for JH's actinoscope]. But GD's cost estimate exceeds total R.S.L. grant of £100. JH cannot approve more than £70; must have funds left for optics and clockwork mechanism.