"That comes—as you call it—of being arrant asses,"retorted the doctor, "and not having sense enough to know honest air from poison, and the dry land from a vile, pestiferous slough. I think it most probable—though of course it's only an opinion—that you'll all have the deuce to pay before you get that malaria out of your systems. Camp in a bog, would you? Silver,I'm surprised at you. You're less of a fool than many,take you all round; but you don't appear to me to have the rudiments of a notion of the rules of health.