Copy letter, from Sir John Herschel to Wilhelm Struve, dated at Slough Copy of letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Is now committed to the Cape journey, and will be occupied most of the time till then with the reduction of John Frederick William Herschel's nebulae observations. Comments on several other astronomical matters. [Letter is finished on board a steam packet on the way to Hamburg to visit John Frederick William Herschel's aunt, Caroline, dated 1832-6-9.] 12 May 1832