No summary available.

No summary available.

No summary available.

Returns his packet of papers together with the letters of M. J. P. Flourens, [J. P.?] Müller, etc. Does not feel competent to judge papers such as MH's, which lie outside his field of knowledge. Should rid his mind of bias on the part of Council. Submit papers as from himself.

Pressure of business prevented him from replying earlier. Reserves his advice for matters that fall within his own researches. Thinks it would be advisable to obtain the opinions of several competent Fellows, not on the Council.

LH's meteorological circular register was laid before the Meteorological Committee, which considers it worthy of notice. Comments on this, and would like to discuss the matter further.

Compares magnitudes for some specific stars and then comments more generally on that question; JH believes he will no longer be able to observe in winter in England as he is too severely afflicted by rheumatism.

In response to a request, JH provides such details as he can about atmospheric and ground temperatures at the Cape; JH goes on to describe how his flowers brought from the Cape are doing.

Wishes to have mentioned to the Physical Section of the B.A.A.S. that JH has discovered that the extreme red rays [infra-red?] of the sun do not darken photographic paper, but tend to whiten it.

Is very insistent that JH receive clear title to Collingwood, with no encumbrances.

Too ill to attend a demonstration by CW of one of CW's instruments [?].

Responds positively to HL's 1839-4-17, and adds some additional comments.

Asks JL to take on the preparations for the magnetic observations, including the instructing of ships' personnel.

About times at which magnetic observations should be made at each observation station.

In response to KK's 1839-10-22, JH sends information on [A. F.] Osler's anemometer, and on magnetic measurements to be carried out.

Passes on the suggestion, from G. B. Airy, of the use of copper rings for damping the movements of measuring instruments in measuring terrestrial magnetism.

Has just done photographic experiments using bromine paper, and is very pleased with them. JH notes in a postscript that he had just received a letter from W. H. Fox Talbot stating that Fox Talbot had just discovered bromine paper as well.

Is working towards having the government hire the school masters [see GN's 1839-9-30] that GN asked JH to find. JH has also spoken to Lord John Russell about Andries Stockenstrom's plight. [Letter finally completed on 1840-2-11.]

Has heard from G. B. Airy that T. F. Colby has written to Ireland for the compensation bars. An additional assistant has been designated but no appointment made yet. Received a letter from their good friend but does not feel justified in bringing it to the notice of a minister. Admiralty has borrowed Fuller's theodolite (from R.A.S.) and the mural circle should soon arrive. Gives Michael Faraday's analysis of the meteorolite.

About arrangements for the publication and distribution of JH's Cape observations.