Copy of draft letter, from Sir John Herschel to Woronzow Greig, 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. Returns Mary Somerville's note and the papers. Does not feel competent to give his opinion on the papers as a whole as there are parts outside his field of study. Comments on some of the points raised, and on the whole he disagrees with the conclusions of the papers. 2 August 1856