On the whole, and providing one is in good spirits and feeling reasonably bright, it is not hard to converse for a short space of time on subjects about which one knows little, and it is indeed often amusing to see how cunningly one can steer the conversational barque, hoisting and lowering her sails, tacking this way and that to avoid reefs, and finally racing feverishly for home with the outboard engine making a loud and cheerful noise.