. . . My dear child, the bromide of sodium (if that's what you call it) proved perfectly useless. I don't mean that it did me no good, but that I never had occasion to take the bottle out of my bag. It might have done wonders for me if I had needed it; but I didn't, simply because I have been a wonder myself. Will you believe that I have spent the whole voyage on deck, in the most animated conversation and exercise? Twelve times round the deck make a mile, I believe; and by this measurement I have been walking twenty miles a day.