Informs CD of K. G. Semper’s desire to meet him and to discuss new information on volcanic phenomena, geographical distribution, etc.
Informs CD of K. G. Semper’s desire to meet him and to discuss new information on volcanic phenomena, geographical distribution, etc.
Wants information regarding undulatory theory of light controversy and the role of Lord [Henry ] Brougham for his obituary. Congratulates good performance of JH's son [John?] in India.
Sends RM a copy of Angelo Secchi's double star observations pointing to a very large number of calculation errors.
Sends some answers to CD’s queries on expression, based on his observations of Abyssinians.
Discusses the great reflector at Lord Rosse's in Ireland. Will send solar autographs JH requested. Thanks JH for the hints about the Julian Calendar.
Asks CD to sign enclosed certificate first, as he does not know T. H. Farrer personally. [On top part of first two pages of a letter to Hooker from H. C. Rothery about Farrer’s nomination for Linnean Society]