Hopes to send to CH a catalog of new double stars soon. JH is very disappointed with Johann Pfaff's German translation of William Herschel's papers.
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Hopes to send to CH a catalog of new double stars soon. JH is very disappointed with Johann Pfaff's German translation of William Herschel's papers.
Sending the Gold Medal awarded to CH by the Astronomical Society and also a pair of bracelets from his mother; will send the indexes later. Just erected James South's large equatorial.
JH played no role in the awarding of an Astronomical Society medal to CH. Sent to CH a few copies of JH's Light. His catalogs of double stars and nebulae are progressing well.
JH asks for a large oil portrait of CH, the size of his father's.
Sent to CH a copy of James South's second paper on double stars and a synoptic catalog of them. Calls CH one of the first discoverers of the 'comet of 1795.' Sent to Astronomical Society a report on 300 new double stars.
Recovering from a prolonged illness. Discusses parallax. JH reports that he now is very skilled at sweeping with the 20-ft reflecting telescope.
Informs CH of his gold medal from the French Academy of Sciences for JH's and James South's paper on double stars. Finds CH's catalogue of nebulae in zones very useful. Heard about Johann Pfaff's death. James Grahame may be moving to Göttingen.
Studied 659 double stars; JH is confident that his work proves his father's conclusions. Now plans to study nebulae.
JH will have little time for astronomy due to election as Secretary to the R.S.L.; the appointment also has forced JH to move from Slough to London.
Happy to be reunited with mother. JH thanks CH for his enjoyable stay in Hanover. Wishes CH well on her [catalogue of] nebulae.
Decides not to go to Switzerland because he wants to visit Hanover. On the way, hopes to see Johann Pfaff at Erlangen, Johann Encke at Seeburg, Baron Bernhard von Lindenau at Gotha, and Carl Gauss and Karl Harding at Göttingen among others.
Describes his laborious journey to the summit of Mt. Etna; from his barometric readings, concludes that its altitude is 10,000 or 11,000 ft. Asks about the progress of Johann Pfaff's translation of William Herschel's papers; JH mentions that he wrote to Pfaff from Cattagione, Sicily. [Letter continued 20 July from Naples and 16 Aug. from Florence.]
Researching double stars. Comparing his finding to William Herschel's, finds that most are compatible. The 40-ft. reflector is unusable, but hopes to try the 20-ft. Heard that WH's papers will be translated into German; wishes Johann Pfaff to undertake it. Asks CH to send him a copy of the finished translation.
A note of praise for Margaret Stewart [JH's fiancée] as a covering note for an enclosed 6pp letter from JH's cousin, Mary Baldwin, to CH, describing Margaret and her family.