...hether they grew by gradual accretion, in an almost unconscious way. On this point I could get no information, though I asked many questions, until at last, one day when I was being rowed across from Beaufort to Ladies' Island, I found myself, with delight, on the actual trail of a song. One of the oarsmen, a brisk young fellow, not a soldier, on being asked for his theory of the matter, dropped out a c...