No summary available.

Thanks for the double star catalogue of JH and James South; comments on observing Encke's and Biela's comets.

Appreciates JH's interest in and encouragement of CW's experiments. Describes new experiments to elucidate theory of undulatory motion of sound and light. Invented 'kaleidophone' to display paths of vibrating rods. Hopes JH can confirm these results.

Is sending journals for JH and others listed. Observations on telescopes and star readings.

Comments on various errors detected in the catalogue of double stars published by JH and JS. Scientific affairs in Paris in relation to Alexander von Humboldt, François Arago, P. S. Laplace, and others. Various cometary and stellar observations of JS.

Reports observing with J. N. Nicollet two comets. Observations of Encke's comet. Gives position of nebula to be observed by JH.

No summary available.

No summary available.

No summary available.

Sends the last volume of his Mécanique céleste for the R.S.L. Comments on his various activities. Is grateful for the memoirs JH sent.

Could he let him have the address of his son James as his mother died this morning.

Suffering from giddiness brought on by the excessive heat of their "uncommon summer"; initially treated it as proceeding from gout but found his stomach was at fault, took purgatives to counteract the threat of constipation but has observed scybala; blames his heavy work load. The heat's effect on the garden: flowers all destroyed, apricots and peaches have not swelled nor ripened, peas and beans were ready all at once and quickly too old for the table, and oats and barley cramped by the heat, though the corn is promising. The poor manufacturing people do not have work above three days a week.

Thanks for Smith's letter of 18 August and medical advice regarding his giddiness and constipation with scybala. Cumberland weather still unaccountably hot; recalls that at this time of his first year in Cumberland there was still snow on the hills and thick ice but this year the harvest is almost complete. Not surprised Smith has found 'Senecio lividus'; recalls collecting seed of it from Oxford walls and has grown it on the walls at Rose Castle along with 'Antirrhinum cymbalaria', 'Hieracium morurm', 'Tussilago odorata', and 'Asarum europaeum'.

Unsure whether the weavers want of work is due to the manufacturers not having sufficient orders or that machinery has been brought into greater use. No indication of political contest heard yet from the new Lord Thanet [Charles Tufton, 10th Earl of Thanet (1770-1832)], who is not so "red-hot" as his late brother [Sackville Tufton, 9th Earl of Thanet (1769-1825)]. Mrs Goodenough persistent complaints compounded by her "unconquerable dislike to taking remedies & using applications".

Addresses Smith as "one of the most successful and scientific cultivators of Natural History of which England can boast", informing him that a natural history museum funded by the government has been established here, by order of Lord Charles Somerset [(1767-1831), colonial administrator], and of which he has been appointed a superintendent. Offers to send Smith and Linnean Society any botanical, zoological, or mineralogical specimens required. Concedes that whilst considerable attention has been paid to this part of the world's botany a great deal remains to be done, alluding to new discoveries such as 'Crapula', 'Mesembryanthemum', 'Aloe', and 'Colyledon'. An application has been made to attach a botanic garden to the museum.

Describes his travels since leaving Norwich on 30 April: stayed with Thomas Forster at Walthamstow and Edward Forster at Hale End, [both in Essex]; gave course of 10 lectures at the London Institution; saw the Coke family and Dr [Martin] Davy of Caius College, [Cambridge]; arrived in Bristol on 12 June but inflammation in his lungs recurred after his first three lectures, following treatment with James's powder, bleeding, and starvation resumed and completed lectures to a "brilliant & numerous" audience; staying in a cottage till end of September to regain his health. Finished third volume of his "[English] Flora". Heat in London prevented him from seeing Roscoe's son, Thomas, and the only exhibition or sight he saw was the King in the drawing room.

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.

Knows nothing of the enmity of Humphry Davy towards [John] Herapath. The purpose of JH's last letter was to point out that Herapath was in error in his solution of certain equations. Must consider correspondence closed.

JH's attempts with Edward Sabine to measure the difference in longitude between Greenwich and the Paris Observatory. Supplies, for Alexander von Humboldt, JH's measurement of Mount Etna's height. Gives message for François Arago concerning paper on magnetism published by JH and Charles Babbage.

Note to accompany the sending of a number of papers; comments on the orbits of double stars.