Copy letter, from Sir John Herschel to Carl Friedrich Gauss, dated at Hanover Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Unable to visit, but has sent two papers on the orbits of double stars. Discusses double stars, noting that four double stars are now known to orbit with periods less than a century long. Wilhelm Olbers is seriously ill. 19 June 1832