One aspect of the Sentinel commands all the map-like detail of Pun-nul Bay, with its labyrinthian creeks among a flat density of mangroves, like lustrous, uncertain byways in a sombre field, erratic of shape, magnificent of proportion. Beyond are many islets--dark blue on a lighter plain. In the distance, on the other hand, islands and islets trail away until lost in the vague blending of sea and sky; and for a background is all Australia. In front alone does the Sentinel peer over uninterrupted space, and not always, for at times patches of white filigree mark the outliers of the Great Barrier Reef. Looking up from Pun-nul Bay before sunrise, the base of the Sentinel 'was swathed in white--night's rumpled draperies not yet tossed aside. As the east glowed it stained the mist pink, and so warmed it that it parted into patches of luminous fluff which floated up and dissolved into crystalline air, and the great lumbering rock stood naked and bold in the sunshine. Then it was that the apex of a splintered peak beyond the Sentinel glittered, and that Chutter-murra Wylo, the one survivor of the truculent natives, told once more of the wonderful stone for which many had ventured, which had caused the disappearance of several, which decoyed man and beast, and stored their bones close to the awful hole whence issued the smoke which made the rain, and the dread lightning, and the thunder. None ever ventured there now; but sometimes in the early morning the stone twinkled for a moment like a malignant sprite, watchful all night, but abashed yet impudent to the authoritative sun. Chutter-murra Wylo had so often indicated the exact locality of the stone, and had described its dire influence with such sincerity that, when it twinkled, a resolution which had been long in the back of my mind became wilful and imperative. He said that it was “on top, along oo-nang-mugil”--a gloomy place among rocks--and that the old men of the country had been wont to say that this particular “oo-nang-mugil” was the favourite resort of the “debil-debil,” the to whose arrogance and awful deeds the bones of man and beast bore terrifying testimony.