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Rh growth became stunted, it would be almost certain to fly again.

Young kittiwakes—as no doubt the old ones, too, though I have not yet noticed them doing so—bathe, or rather play about in the sea, very prettily. They flap their wings in an excited way, or hold them spread on the water whilst turning round, or half round in it, then, with their wings still spread, they make a little spring upwards, and flop down on it again, like a kite falling flat, and repeat the performance any number of times. There are staider intervals during which they duck and sprinkle themselves in the ordinary way, but this is not such a prominent feature as the other. I doubt if these little roundabouts, which seem to please the bird so much, are really in the nature of bathing, and the same doubt has been still more strongly impressed upon me in the case of the shag, and, to some extent, of the coot. To me it seems that the so-called bathing of many aquatic birds much more resembles an antic than movements made for a definite purpose—or rather I suspect that the one thing is in process of passing into the other.

The passage, as I believe, might take place in this way. A land-bird bathes in water with the express object of cleaning itself, and therefore the energy which it expends in so doing is both guided and regulated. It is confined within a certain channel, which it does not leave. But when this same bird takes to the water—for I assume all aquatic birds to