JG is revising his diary.
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JG is revising his diary.
Encourages JH to undertake a proposed trip to the Southern Hemisphere [letter completed 1832-5-1].
Responds to RP's concerns about the nature of light and the interpretation of some interference experiments. JH believes that the undulatory theory of light is the best supported by the experiments at this time.
Has received the chronometer and will return it to Lister, together with his remarks on apertures. Charles May has found another individual suffering from color blindness. A friend has successfully made a reflecting microscope.
Wonders how JH's projected volume on Astronomy is progressing. Would also like a short biography of Francis Bacon.
Sends letter, inspired by J. von Liebig's paper on separation of metallic oxides, to Annales de Chimie et de Physique. Fears JH's scientist friends may fall victim to the 'terrible malady...now raging' [in Paris].
JH's notes on separation of iron oxide and a new procedure for complete purification of uranium.
Must decline invitation to dinner due to poor health.
Reminds JH to send his catalog of double stars.
Wilhelm Struve's observations support JH's findings concerning the rapid revolution of Eta Coronae. In acknowledgement of the discovery that double stars are a 'revolving binary system,' JH changed the inscription on William Herschel's monument.
Discusses study of light, JH's theories on the subject, and his own photometer observations. Asks JH for further explanations of his theory.
Will he be visiting Cambridge this Spring?
Passing on the offer of assistance by Frederick Augustus (Duke of Sussex) for JH's projected visit to the Cape of Good Hope.
Is grateful for the offer of assistance from Frederick Augustus (Duke of Sussex), but would not care to avail himself of public funds as his intended visit is for his own private reasons.
Discusses a method of separating iron oxide from the oxides of other metals and a process for the purification of uranium oxide.