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Rh occurred to me that this has been developed as a guiding star for one to follow another by, just as the white tail of the rabbit is supposed to have been. I have often watched two pursuing each other through the dim leafiness, each uttering a variant of the deep, croaking note of which I have spoken, and which answers to the call, chirp, or twitter amongst other birds. At such times the ruddy star or streak has always, as I say, been most conspicuous. Independently of this, the bird's general colouring is a pleasing olive brown which, according to position and circumstances, has a more or less glossy appearance, the tail having received the finest polish. By virtue of all this, I feel sure that, to anyone who had watched and waited for her, the nightingale would come rather as a conspicuous than a dull-looking bird, at least amongst our smaller British birds. Tits and chaffinches, as it seems to me, flash less as they flit through the trees. Therefore, when I read the eternal remarks about its dull colouring, which—and this is the bane of natural history—one writer hands down from the mouth of another through the generations, I say to myself that each and all of them have, either, never called upon the bird and stayed an hour or two, or else that they have got out of the habit—which may be also a trouble—of seeing anything other than as "it is written." So far from the nightingale being specially like a plain-bound book in which lovely songs are contained, to me it seems to offer an example of a bird distinguished both by its musical powers and—to a much lesser extent, certainly, but still not insignificantly—by its colour also. I am thinking of its tail, and particularly of that ruddy