Copy of draft letter, from Sir John Herschel to Augustus De Morgan, dated at Collingwood Copy of draft letter, copied as part of the correspondence project led by Colonel John Herschel FRS following the death of his father. Hopes Augustus De Morgan will be successful in his projected paper on the infinity of magnitude. Does not recollect the paper by J. J. Sylvester. Has had a letter from Manchester on his own theory of eternal existence. 29 May 1862