Would like to establish himself in England for the purpose of making high quality glass using a process developed by his father [P. L. Guinand].

Tells AG that JH is a member of a committee looking for ways of making better glass, so AG should not reveal any secrets to JH. JH provides the names of the leading telescope-makers in London, whom AG may wish to contact.

Is still looking for suitable people to work in the glass experiments.

A furnace for glass making is under construction at the Royal Institution.

Indicates the best way for the glass subcommittee [of the R.S.L.] to deal with the results of glass experiments at the Royal Institution [see MF's 1827-11-3].

Informs MF that JH has been called to serve on a grand jury and so may have to miss some glass subcommittee meetings. [This note enclosed the letter written by JH on 1827-11-6.]

Will be out of town for next [R.S.L.?] council meeting. Comments on glass subcommittee report.

Thanks for the works. How can he send some for the R.S.L. and Astronomical Society?

It appears that J. T. Cooper would be willing to work in the performing of glass experiments. If this seems acceptable, then a meeting of the glass committee should be called.

Is sailing for Buenos Ayres in a few days' time. Would like to thank JH for his kindness; would also like to see him, if convenient, before he departs.

Introducing his friend Mr. De Lavigne, who is visiting England. Mentioned him in his memoir on the Measure of the Arc.... Gives news of his own astronomical work. Edward Sabine arrives at the end of the month. Has obtained remarkable results with his two pendulums.

Has received the actinometer safely by the hand of Mr. De Lavigne, also the instructions. Hopes to use it in the Alps, and will send some observations. De Lavigne was enchanted with England.

Has just returned from the Alps, where he worked on the glacier at Chamouny and in the St. Bernard. Comments on his work and on the work of the actinometer. Regrets to hear of the death of Mrs. Babbage.

Outlines the difficulties he has had to return JH's actinometer. Gives details of his observations in the Alps. Comments on the chronometer used.

Sending observations of his barometrical observations made during the summer at Chamouny. Comments on them and the work of [Alfred?] Gautier.

Sends copies of a paper to JH and D. F. J. Arago on a chemical experiment being conducted at the Institute of France. Asks JH to present it to the R.S.L.

Informs HK that JH intends to resign as secretary of the R.S.L.

Discusses comet observations, together with variations from different observers. HO offers some historical fragments about the planet Venus, and about the Lilienthal telescope.

Comments on the observations JH has made with his 20-foot telescope, especially nebulae. HO provides some of his own observational data of Comet Encke.

Is afraid JH will decline the invitation to be a candidate for the Lucasian professorship, so it is assumed Charles Babbage will be elected.