No summary available.

All N. L. Lacaille's observations have been reduced and a complete catalogue sent to Francis Baily to be incorporated into the catalogue of the R.A.S. Hopes Baily is recovering his health.

Thanks for mentioning HH's book [Medical Notes and Reflections (1839)] in JH's review of William Whewell in latest issue of Quarterly Review. Sends copy of its second edition.

Willy [Herschel] is doing well and is looking much healthier. Has hired a pony for him to ride. The family doctor has given him a good examination.

Will bring Willy [Herschel] to town tomorrow. Comments on his health. Has been trying to buy the Shetland pony for him.

Gives brief details of the work of the magnetic observations since JH's last record. Arrangements have been completed for the publication of some of the observations.

Explaining how JH may express his thanks at being made a Knight Commander. HO has also been made a Knight Commander. Will see that he now spells his name Ørsted.

Has read WT's paper before the R.S.L. and now complains they will not print it in the R.S.P.T. as they understand it has appeared elsewhere.

Reports on paper by Samuel Brown to the Royal Society of Edinburgh on the conversion of carbon to silicon, and other transmutations. Reports on discovery of new element, ozone, and complains further about R.S.L. Council.

Grateful for kind reception that JH gave to GM's son, who attended Exhibition to demonstrate GM's telescopes.

Asks whether JH will be prepared to present the committee report on N. L. Lacaille's stars at the B.A.A.S. meeting on 29 July.

Asks whether JH will be prepared to give the committee report on systems of simultaneous magnetical and meteorological observations at the B.A.A.S. meeting on 29 July.

A letter accompanying a proof copy of the Report on Standards, asking JH to read it carefully and annotate as completely as necessary.

Wants JH to include [J. C.] Ross's instructions in his forthcoming report. Encloses tract on station errors. Discusses [Elias] Loomis's findings regarding errors in measurement.

Corrects information from an earlier letter. [John] Caldecott stated that diurnal curve of declination changed with monsoon at Trivandum. Discusses [William] Allen and observation with transportable magnetometer.

Discusses the reductions and publication of magnetic observations from various stations. Describes report of the Antarctic expedition and the determination of the magnetic pole. Endorses proposal for Canadian Survey. Discusses survey of South Africa and British Guiana.

Announces results of last observations, both magnetic and meteorological. Hopes to see JH.

Found letter sent at the R.S.L. Left with William Whewell for Plymouth. Results are forthcoming on meteorological observations that JH suggested. Regrets not seeing JH in England.

Forwards from J. W. Lubbock letters from [R.S.L.] foreign office regarding establishment of magnetic observatory at Hammerfest and informs JH that Adolphe Quetelet will be in town.

Regarding JH's examination of the observations of equinoxes and solstices; GA assures him that these occurrences are observed by Cambridge and Greenwich, though JH does not mention it. Hopes he has received the report of the last 'Standards' meeting.