No summary available.

Gratified by AvH’s letter.

Sends data on temperature of the sea in the Galapagos, South Pacific, and the Abrolhos Islands.

CD thinks report of a rock imbedded in an iceberg is remarkable; wants to write a note for the [Journal] about it. Asks for location of the sighting and a chart of the Antarctic Sea. [See "Rock seen on an iceberg", Collected papers 1: 137–9.]

Urges JSH to describe Galapagos species in a paper on the flora of the islands.

Has been interested in geographical distribution and would be interested to have a paper by JSH on the general character of flora of Tierra del Fuego and Patagonia.

"I keep on steadily collecting every sort of fact which may throw light on the origin & variation of species."

Asks if WHM would be interested in the meteorological observations of the Falkland Islands made by B. J. Sulivan on a recent survey. Such observations are rare and appear to CD to have many points of interest.

Encloses the Smith, Elder & Co. account for the fourth number now published of the third part of the Zoology.

Sends bird specimens for examination by TCE [for Birds].

Speaks of arrangements for magnetic observatories in India, in the Himalayas, and at Bombay. Discusses the locations and buildings of the sites. Wishes to add Singapore as an observatory station.

Americans plan to investigate laws of North American storms. U.S. government should apply to British if cooperation is desired. Thanks JH for letter recommending ES for royal medal. Hopes someone will work on scientific data collected by different governments.

Encloses a letter from Alexander von Humboldt to Lord Minto endorsing the idea of an international magnetic survey. Stresses the value of the letter.

Encloses notes. Has received JH's message about the action of the R.S.L. Council.

Encloses Humphrey Lloyd's plans for [magnetic] observation. Requests a reply.

Claims the name 'meteorological committee' is misleading for a R.S.L. committee that handles all branches of observational physics. Suggests that physics be divided into 'Experimental and Terrestrial.'

Announces that copies of the observations are being sent by post and states that additions and corrections will be approved and added before the full report is submitted to the R.S.L. Council for authorization for printing. Agrees to write up the Meteorological Committee's annual report.

Agrees that in the R.S.L., Geology belongs under Terrestrial Physics, and would be there had it not its own committee. Says Terrestrial Magnetism no longer belongs under the head of Atmospheric Physics. Claims he plans to discontinue his membership in the R.S.L. if his committee is no longer in charge of terrestrial magnetism. Refers to the awarding of medals.

Compliments Georg Erman's map of the declination lines made from observations, which confirms C. F. Gauss's map derived by theory. Asks JH whether the map should be printed and attached to the R.S.L. report. Plans to see JH at Slough. Thinks the idea of there being two auroras, one in the west and one in the east, is interesting.

Talks of new plans for an observatory in Egypt. Encloses two letters. Has begun to compare data of the last three years from five or six observatories all over the world.

Speaks of [John] Caldecott, Astronomer to the Rajah of Travancore, who plans to build an observatory. Needs a letter from the R.S.L. for the Rajah and also for Johann Lamont, who is working in Germany.

Has written to G. B. Airy about the Cavendish experiment and encloses his diagram and letter.

Encloses a letter to the Admiralty for JH's signature.