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Rh gently and gradually that one is hardly conscious of what they are about till one sees them no more. As much as any creature, I think, they "softly and silently vanish away." Another habit which they have is shared by the cormorant and other sea-birds, and has often puzzled me. It is that of continually dipping their bills in the water and raising them up from it again, as though they were drinking, though that they should drink the salt sea like this, for hours at a time, seems a strange thing. What is the meaning of this action, which I have just seen a shag perform forty-six times in succession, at intervals of a few seconds, as if for a wager? And this was after having watched it doing the same thing for some time before. After the forty-sixth sip, as it were, this bird made a short pause, and then recommenced. Is this drinking, and, if not, what is it? The head and part of the bill are, each time, sunk in the water, so that, as the bird moves on, they plough it like the ram of a war-ship. Then, in a second or two, the head is raised, not so high indeed as in an unmistakable thirsty draught—which I do not remember at any time to have seen shags indulge in—but with much the action of drinking. The bill, it is true, is very little opened, hardly sufficiently so to be noticeable, but very little would allow of water entering it. But why should the bird drink like this? It cannot be that the salt water makes it more and more thirsty, for this, as with shipwrecked sailors, would produce evil consequences—probably death—but, of course, this is out of the question.