Studied 659 double stars; JH is confident that his work proves his father's conclusions. Now plans to study nebulae.
Writes to thank the Philosophical Society of Philadelphia for the gift of the catalogue of its library.
Invites ES to join him and other scientists for dinner. Requests that ES prepare a detailed description and justification of his proposed Teneriffe experiments for consideration by the R.S.L. Council.
Has too long delayed thanking him for his works. Sends some memoirs of Edward Sabine, etc. Comments on work that needs doing.
Read your proposal on experiments at Teneriffe to the R.S.L. Council, which declined to make 'an especial recommendation' in support of them to the government.
Copies of the Éloge, which JF sent, are still at the Customs house so he is unable to comment on it. A list of his father's works is to be found in the Index to the R.S.P.T. Gives a list of all the discoveries and inventions of his father.
Has received materials sent by JS. Printing of paper by JS and JH on double stars is nearly completed. Urges that the issue is not whether the observations of 70 Ophiuchi made by Wilhelm Struve are better than those made by JH and JS; the issue is truth. Caroline Herschel has sent to JH a catalogue of his father's observation. Busy observing nebulae.
No summary available.
Rearranges a meeting of [the R. S. L.'s Glass Committee] to take place at the Pellat and Green's Glass House in Holland St.
Acknowledges receipt of WS's second volume of observations and the new telescope's results. Mentions Caroline Herschel's catalogue of nebulae.
Encloses R. Bonne's letter and gives further instructions regarding rockets for experiment.
Edward Sabine declares that R.S.L. is hostile to ES's interests. If ES makes future claim for compensation, JH wants TY's opinion in writing. Need to order four night glasses for Fairlight Station. Encloses letter from [Richard] Copeland.
Six artillery men have been placed under ES's command. Encloses letters from Charles Bonne. Asks ES to oversee the arrival of 180 rockets to be used at Wrotham and Fairlight. Proposes that ES test whether a light at Wrotham can be seen at Fairlight in which case gunpowder will be used instead of rockets. Sets date for ES to meet Bonne in Hornoy. Urges ES to record his expenses for the Board of Longitude.
Encloses note about transportation of rockets, telescope, and chronometer, with suggested schedule for experiments.
Mostly involves arrangements about exchanges of papers and printing some of GP's in the Astronomical Society Memoirs.
Reports to JG on the publisher's response. JH offers JG financial assistance, telling JG 'I am rich,' JH's income being significantly greater than his needs.
Introduces [C. T.] Largeteau from France, who wishes to receive from JP the observations made at Greenwich as part of the determination of the difference in longitude between the Greenwich and Paris observatories. Recounts some difficulties encountered in making the measurements.
Unable to call on him as his mother wishes to return home directly. Edward Sabine has not returned yet. Outlines some of the difficulties Sabine is experiencing. Premature to judge results at the moment.
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.
Comments on JH's mother's health, some communication from Greenwich, and the weather.