Reports his 'entire failure' with Charles Bonne to see signals from both La Canche and Mont Javoul on the same night. Tells of moving the telescopes to Tuniers on 1825-7-15. Speaks of similar experiments elsewhere, which also failed. Concludes that distance is not the only factor in distinguishing signals. Plans to visit JH on 1825-7-25.
On his contacts with French scientists and on their praise for the JH's and JS's catalogue of double stars. Suggests that JH, beset by excessive commitments, cease to devote time to seeing JS's publications through the press. Comments on the personal cost to JS of his devotion to double stars. Remarks on JH's efforts to measure the difference in longitude between the Greenwich and Paris observatories. Data on double stars.
Reports Charles Bonne's voyage to Mont Javoul and discovery that the rockets there had been sent off too early, accounting for the previous failures. Reports subsequent successes. Conveys his plans to arrive at Teneriffe.
Invites Smith to visit Boyton, Captain King, [Robert] Brown, and the two Dons are also to visit. Has appointment for assistant to Dr [Nathaniel] Wallich, a salary of £530 per annum. Offers to show Miss [Etheldred] Benett's [(1775-1845), fossil collector and geologist, Lambert's sister was married to her brother John] collection of fossils, the most scientfically arranged in the country, to Mr Reeve. Has acquired [James] Bruce's [(1730-1794) Scottish traveller] collection of 300 natural history drawings from Abyssinia direct from Kinnaird, Scotland, describes dealings with the family. In postscript tells Smith he has been raising plants from Egypt. Sir Richard Hoare has been staying. Believes that the whole of Regent's Park is to be turned into a "national botanical garden", has been asked to take an active part in it.
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.
Apologizes for the long delay in writing of JH's election into the Danish Royal Academy of Sciences. HO is carrying on experiments with chlorine gas and metals.
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.
No summary available.
Pleased that Astronomical Society will publish GP's memoir (in French) [see GP's 1825-5-27]. Adds some comments for clarification on points in paper and makes arrangements for copies of the paper.