like a mushroom. But it was not at all mushroom-like; on the contrary, it was very solidly built. In form it resembled the Irish round towers, which have puzzled people for so long, nobody being able to find out when, or by whom, or for what purpose they were made; seemingly for no use at all, like this tower. It was circular, of very firm brickwork, with neither doors nor windows, until near the top, when you could perceive some slits in the wall through which one might possibly creep in or look out. Its height was nearly a hundred feet, and it had a battlemented parapet showing sharp against the sky. As the plain was quite desolate--almost like a desert, only without sand, and led to nowhere except the even more desolate seacoast--nobody ever crossed it. Whatever mystery there was about the tower, it and the sky and the plain kept their secret to themselves. It was a very great secret indeed,--a state secret,--which none but so clever a man as the present King of Nomansland would ever have thought of. How he carried it out, undiscovered, I cannot tell. People said, long afterward, that it was by means of a gang of condemned criminals, who were set to work, and executed immediately after they had done, so that nobody knew anything, or in the least suspected the real fact. And what was the fact? Why, that this tower, which seemed a mere mass of masonry, utterly forsaken and uninhabited, was not so at all. Within twenty feet of the top some ingenious architect had planned a perfect little house, divided into four rooms--as by drawing a cross within a circle you will see might easily be done. By making skylights, and a few slits in the walls for windows, and raising a peaked roof which was hidden by the parapet, here was a dwelling complete, eighty feet from the ground, and as inaccessible as a rook's nest on the top of a tree. A charming place to live in! if you once got up there,--and never wanted to come down again. Inside--though nobody could have looked inside except a bird, and hardly even a bird flew past that lonely tower--inside it was furnished with all the comfort and elegance imaginable; with lots of books and toys, and everything that the heart of a child could desire. For its only inhabitant, except a nurse of course, was a poor solitary child. One winter night, when all the plain was white with moonlight, there was seen crossing it a great tall black horse, ridden by a man also big and equally black, carrying before him on the saddle a woman and a child. The woman--she had a sad, fierce