It is almost impossible to imagine that any one could be so insensible to the high morality of Mr. Mill's character as to suggest to him any course of conduct that was not entirely upright and consistent.
If you direct your attention to the position of a bird with regard to the wave surface, it will speedily be noticed to be nearly always on the rising side or face of the wave and moving apparently at right angles to the wave's course, but really diagonal to it.