[J. C.] Houzeau has sent a paper on the determination of parabolic elements of a comet. Relays a copy of his method, which HS will examine more closely before publishing.

Hopes to add JF's name to B.A.A.S. Meteorological Committee, and to see JF at Cambridge meeting of the committee.

Mentions how helpful JH's name would be on a memorial for C. P. Smyth. C. P. Smyth working on zodiacal light observations.

Because of the 'severe loss' recently suffered by Mrs. Whewell, Margaret Herschel will not stay at Trinity Lodge during the B.A.A.S. meeting. JH plans to go to Ely after the meeting.

JH does not appear to have received his last letter. Has not been well, but hopes to be better for tomorrow. Own brother has been behaving in a peculiar manner. Daniel has been dealing rude blows. Hopes to visit JG's laboratory. Has now visited the laboratory and spent two agreeable hours.

JDH writes that George Arnott Walker-Arnott returned him a letter from Dr [John] Scouler saying that it suits his [Arnott's] ideas but JDH is not sure what he means by this. JDH encloses a number of letters [not present]: one for [Thomas] Twining in Twickenham regarding a recommendation for Gilbert McNab who is going out to India to work for the Assam Tea Company, & other letters from [John] Gunn, Scouler & Sinclair. States that he has written again to [Carl Ludwig von] Blume as he may not have understood the last letter. He dined with E. Henderson who asked him to meet a Baillie body & Principal [John] Lee, who is more favourable to JDH than Principal [Duncan] Macfarlane. Lee told Henderson that the body was afraid of JDH's wisdom. Asks his father if there are any changes to the distribution list for FLORA ANTARCTICA as it is time to start sending out copies. No further news apart from a visit to the Garden by Prince Henry of Holland. Thanks his father for the name of Fevillia which he would not have guessed otherwise. Notes that [Robert] Graham is still ill & speaks very little. Page 2 of the letter consists of a pre-printed form divided into 18 boxes which each contain at the bottom 'Antart[arctic] Exp[edition] 1839 -- 1843. J.D.H.' & above which are printed the names of Sub-Antarctic islands and other places visited i.e. Campbell Island, Lord Auckland's Islands, Falkland Islands, Kerguelen's Land, Hermite Island, Cape Horn, New Zealand & Tasmania. These are assumed to be samples of plant specimen labels with a space to write in an ID number and species name above the location they were collected. JDH has written across this form that the samples show credit to Arnott's taste who arranged them on JDH's behalf at [William] Wilson's suggestion. To print 800 would cost 18 shillings incl paper.