Copy of a letter, from John Frederick William Herschel to Richard Sheepshanks, dated at [Collingwood] Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Has received interesting observations of double stars from Thomas Maclear at the Cape observatory. The new equatorial lens sent to the Cape arrived safely, in spite of sloppiness by the English custom-house. 1850