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Has been unable to carry on his astronomical pursuits for the past three years. Would like to visit JH to see the construction of his telescope.
The metrical system is decaying. Does not see any future for the standard yard. A universal language is a necessity.
Has just received the Admiralty Manual. Thinks it would be helpful if some tables for determining the heights of mountains by means of the barometer could be included in the next edition. Points out an error in the Nautical Almanac.
Sends his fractional approximation of a sidereal revolution. Would like his opinion on its accuracy. Clock will not be finished for several years.
On the evening of 4 Jan. he found a nebulosity in or near Draco that he has been unable to discover in any catalogue. Has discovered another red star in Taurus, which is not given in JH's list.
In looking through Lamont 1845-6 he found two observations of Neptune not previously recognized. Thanks for his memoir on the orbits of double stars.
Sends an interesting result of the comet computed by Mr. Barber of Etwell. W. R. Dawes's observations are about to be printed. Wilhelm Struve has some curious optical equations. Will be pleased to see Dr. [Henry?] Holland when he arrives.
Has just received a memoir from Bastiaan Bomme of Middelburg on the comet of 1264 and 1556. Sends the chief results. Comments on the findings and future appearances of the comet.
On Nov. 4 observed a red star, which does not appear in any of the recent maps or charts. Gives readings. JH may be able to throw some light on it.
Thanks for congratulations on marriage of HH's daughter. Notes HH's review of J. C. Prichard's Natural History of Man in December issue of Quarterly Review, written while on holiday in Armenia.