Copy letter, from Sir John Herschel to Charles Wheatstone, 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. Received prospectus of Kew observatory. Its objectives seem incompatible. It appears better suited as experimental institution. Refer Francis Beaufort to John Frederick William Herschel's 11 Oct. 1835 letter to Beaufort defining physical observatories. 17 June 1842