Reports on instruments being sent to Hamburg and to Egyptian observatories. Encloses portion of [K.] Kriel's letter to [A. T.] Kupffer. Reports on [Charles] Riddell's securing a site for a meteorological observatory.

Progress in construction of observatory. Completion expected in May. Poor weather hampers actinometer observations.

Obliged for his kind note and also for forwarding the paper to the R.S.L. Would like to belong to the R.S.L. and would be pleased if JH would sign a certificate for him.

Sent an extract of JH's letter to P. G. le D. Pontecoulant. Now gives an extract from Pontecoulant's reply. Is sorry they are not to see JH at S. J. A. Compton's (2nd Marquis of Northampton) tonight.

Sends two lithographs. Has seen the Archbishop and expects to launch his scheme with the approval of the leading politicians.

Erebus and Terror have arrived in Simon's Bay. Discussed Magnetic Observatory with J. C. Ross, Captain Croper, and F. E. Wilmot, and wrote government requesting funds. Obelisk has not yet reached the Cape. Small pox rages in Cape Town.

Describes the process of preparing photogenic paper, taking drawings, and fixing them.

Was not certain how to reply to his last obliging letter. Has resolved to write to Professor [J. P.?] Müller. Thought it right to inform JH of his plans.

Anthony Oliphant has died. The plan to establish a system of meteorological observations at the Cape Colony and in Caffreland has failed.

Discusses Charles Riddell's desire to serve at a North American observatory and the expenses involved.

Apologizes for his long silence. Outlines recent events at the Cape concerning Andries Stockenström, who has been replaced by J. Hare, and Major C. C. Michell, who has resigned. J. R. Innes has been all over the Colony and will shortly be coming to England. F. M. Eardley-Wilmot has dined with the Napiers.

Discusses glass manufacturing.

Sends JH a pamphlet about meteorological observations in India.

Would like JH's account of his own method of fixing a photograph as noted in his memoir. Singular phenomenon of the Daguerreotype. Hopes to produce a photographic paper to equal the silver plate before the month has expired. Will let him know when his process is complete.

Suggests a book of expenses be kept at the R.S.L.

Describes additional measurement of annual parallax.

Should think that the R.A.S. would be pleased to receive the 5-ft. telescope. Regarding the printing of Thomas Maclear's paper. H. C. Schumacher has sent a paper by Wilhelm Olbers on the constellations.

Has received [Temple?] Cheval[l]ier's paper and JH's letter informing him of his valuable gift. G. B. Airy is anxious to have Thomas Maclear's paper printed in the Memoirs as soon as possible without waiting for the government.

Discusses plans for a U.S. magnetic observatory and of [Karl] Kreil's paper about predicting earthquakes. Discusses the affairs of other observatories.

Is grateful for the handsome manner in which JH has acknowledged RH's work. Would be willing to prepare a memoir for the R.S.L. Does Louis Daguerre's patent affect RH's manufacture of photographic papers? Has not studied the bromnets so far, but has studied the effects of bromine on plates. Comments on his results.