Not able to assist JP as he knows no schoolmaster in the area.
Cannot answer zoological question but thinks the two Serpulae are distinct.
Not able to assist JP as he knows no schoolmaster in the area.
Cannot answer zoological question but thinks the two Serpulae are distinct.
Believes "absurd letter" hastily read at last Geological Society Council meeting was from Charlesworth’s solicitor. Suggests that it may have been sent to entrap the Council and that it should be read over carefully.
Responds to CM’s review of Coral reefs [Edinburgh New Philos. J. 34 (1843): 33–47].
No summary available.
Would like JH's advice how to obtain a place in Christ's Hospital for his brother-in-law. Queries regarding the firing of shot guns and on the spectrum.
Has been working at [L. F.] Moser's experiments and believes he is wrong in considering latent light as the agent that produces the photographic image. Read a paper last evening on the subject, which will be printed. Has been producing images by the action of heat and electricity and proposes to call this process Thermography.
Was pleased to receive JH's letter and to read that he had really proved the existence of [invisible light?]. One of his students has produced images on copper plates by sulfur fumes. Has just seen Macedoine Melloni's memoir, which is now governed by JH's views.
Is anxious about his aunt Caroline Herschel and would like news of her health.
Comments on some papers on vision and photography by Mr. Moser, and compares this with some of JH's own writings on the subject.
Received JF's paper on 'thermographic process.' Believes that thermic rays were responsible for experimental results of JF, J. W. Draper, and Ludwig Moser. JH's theory of and experiments with thermic rays, which are different from 'calorific' and visible rays, in solar spectrum.
A note accompanying a sample of high quality ferrocyanide of [iron?].
Continues horary observations suggested by JH. Also magnetic observations. Discusses observations of migration of birds. November has been cloudy so far and meteors cannot be seen.
Unwilling to come to a meeting as JH anticipates the return of some of his children from the continent; seems considerable confusion as to who is to do what about star catalogues [see GA's 1841-7-27].
Thanks JH for advice on the issue of P.M. that has just been published.
Has arranged meeting to discuss N. L. Lacaille's observations. Sends a toy purchased in the streets of London.
Has passed on the papers sent by FA. Tables of chief stars. Observations on FA's letter of 28 October 1842 [see FA's 1842-10-28]. Sends observations of Orionis.
Readings of comets.
More about Prussian Order of Merit; further annual parallax observations, together with comments on other observations.
Has seen G. B. Airy. No meeting at Airy's. Further regarding reports of the recent eclipse.
Has written to G. B. Airy. Regarding the various reports of the recent eclipse.