in quest of food and returned successful, while the lazy, beautiful giant sat sunning himself on his cross-stick and hungrily cried for more. This is one of those exceptional sights in nature which, however often seen, never become altogether familiar, never fail to re-excite the old feelings of wonder and admiration which were experienced on first witnessing them. I can safely say, I think, that no man has observed so many parasitical young birds (individuals) being fed by their foster-parents as myself, yet the interest such a sight inspired in me is just as fresh now as in boyhood. And probably in no parasitical species does the strangeness of the spectacle strike the mind so sharply as in this British bird, since the differences in size and colouring between the foster-parent and its false offspring are so much greater in its case. Here nature's unnaturalness in such an instinct--a close union of the beautiful and the monstrous--is seen in its extreme form. The hawk-like figure and markings of the cuckoo serve only to accentuate the disparity, which is perhaps greatest when the parent is the hedge-sparrow--so plainly-coloured a bird, so shy and secretive in its habits. One never ceases to be amazed at the blindness of the parental instinct in so intelligent a creature as a bird in a case of this kind. Some idea of how blind it is may be formed by imagining a case in widely separated types of our own species, which would be a parallel to that of the cuckoo and hedge-sparrow. Let us imagine that some malicious Arabian Night's genius had snatched up the infant male child of a Scandinavian couple--the largest of their nation; and flying away to Africa with it, to the heart of the great Aruwhimi forest had laid it on the breast of a little coffee-coloured, woolly-headed, spindle-shanked, pot-bellied, pigmy mother, taking away at the same time her own newly-born babe; that she had tenderly nursed the substituted child, and reared and protected it, ministering, according to her lights, to all its huge wants, until he had come to the fullness of his stature, yet never suspected, that the magnificent, ivory-limbed giant, with flowing yellow locks and cerulean eyes, was not the child of her own womb. XI