Copy of a letter, from John Frederick William Herschel to Henry Kater Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Encloses John Frederick William Herschel's translation of J. J. Littrow's method of determining latitude by pole star. It already appeared in F. X. Zach's Correspondance astronomique.... Send Francis Beaufort's survey of Karamania coast. 1822-3-28 or later