About the urgent need to prepare a report on the magnetic observations, and that HL is the most logical person to give direction to it.

Thanks for letting JH know about honor accorded at 'the Anniversary' [Meeting]. Offers condolences on JL's 'late severe loss.'

Further observations on David Brewster's experiments. On heliometers. Observations on suggestions for Standards.

Wishes JH would lay hands on the memorandum concerning the Zenith observatory on Etna. Explains why JH's theories regarding a point in gunnery do not work in actual practice. Queries the measurement given by JH for the height of Etna.

JH and family are beginning to feel at home at Collingwood.

Consults JH before responding to Wilhelm Weber's proposal for publication of observations. ES proposes to publish German data with data from Toronto, St. Helena, the Cape, and Van Diemen's Land. The Physical Committee of the R.S.L. suggests strengthening Adolphe Quetelet's application to the Belgian government for magnetic observations. The Hammerfest [Norway] magnetic curve does not harmonize with European ones.

Took the chair at a meeting of the Committee for Physics at the R.S.L. Is to bring the matter before Council, who in turn will request the Master of Ordnance to publish the observations. Material from each observatory will require about half of a quarto volume.

Encloses observations on a comet by Carl Bremiker for the next meeting of the R.A.S. Will be unable to attend many of the meetings for this session. F. W. Bessel has lost his only son. C. F. Gauss's researches into the motion of the sun.

Regarding the correct figure for the height of Etna, W. H. Smyth favors the half foot measurement. Regarding falls of stones from Vesuvius. Encloses calculations made by professor at Naval College. Remembers large balls of lava at Teneriffe.

Council of the R.A.S. will have to consider claims for the medal award at its next meeting. Has JH anyone in mind so that his claims may be considered.

On the possibility of obtaining a heliometer from Munich.

Does not know anywhere that such processes as RH uses are used for registry work, although the idea is frequently raised.

Has sent his communication on the comet to various observatories and the Times. Will consider candidates for medals at the next council meeting.

Has JH any special instructions for [Louis] Agassiz's actinometers? Has sent Wilhelm Weber recent data for Toronto and St. Helena observatories while requesting Göttingen lunar observations. Discusses publication of the German Magnetic Association. Seeks advice on the inclusion of a translation of JH's paper on photometric apparatus. Has left at the R.S.L. a copy of C. F. Gauss's and Weber's magnetic atlas.

Has not heard from Dr. Ferguson. Quotes what TY can recall of Latin maxim.

Thanks for [?]'s note and enclosed sonnet. Sorry that old church was replaced during JH's absence from England.

John Murray transmitted JH's note regarding his review of William Whewell's book. Wonders if this letter has been acknowledged. Would like the paper as soon as possible.

Cannot remember all four lines of Latin maxim. Will ask Dr. Ferguson for correct version.

Wishes he had communicated direct with JH regarding his article on William Whewell's History of the Inductive Sciences. Could not put it in the present number, but if any part of the article has been written please send it to their printer.

Hopes to have JH's review of William Whewell's History of the Inductive Sciences ready for the next issue of the Quarterly Review.