obscure, as I thought, in a manner very different from what happens by the interposition of a cloud. I turned back, and perceived a vast opaque body between me and the sun moving forwards towards the island: it seemed to be about two miles high, and hid the sun six or seven minutes; but I did not observe the air to be much colder, or the sky more darkened, than if I had stood under the shade of a mountain. As it approached nearer over the place where I was, it appeared to be a firm substance, the bottom flat, smooth, and shining very bright, from the reflection of the sea below. I stood upon a height about two hundred yards from the shore, and saw this vast body descending almost to a parallel with me, at less than an English mile distance. I took out my pocket perspective, and could plainly discover numbers of people moving up and down the sides of it,