During the first half of September, the sun in Ceylon and India, and also in the West Indies, presented at rising and setting the appearance of a green or greenish-blue disc. Even when at his highest the sun appeared pale blue in Ceylon (from the other places no account of the sun’s aspect at high noon has reached me). On September 2, at Trinidad, the sun looked like a blue globe after five in the evening, “and after dark,” says the report, “we thought there was a fire in the town, from the bright redness of the heavens.” At Ongole, as the sun approached the horizon, his disc passed from a bluish tinge to green, which became tinged with yellow as he approached the horizon. “After he had set, light yellow and orange appeared in the west, a very deep red remaining for more than an hour after sunset; whereas, under ordinary conditions, all traces of color leave the sky in this latitude,” says the narrator, “within half an hour after the sun disappears.” These accounts, from both the eastern and western hemispheres, seem clearly to associate the green sun which attracted so much attention in the tropics early in September, with the remarkable sunsets seen in Arabia, in Africa (North and South), and throughout Europe during October and November. For we see that whatever may have been the explanation of the green sun, the phenomenon must have been produced by some cause capable of producing after sunset a brilliant red and orange glow, for a time much exceeding the usual duration of the twilight afterglow. The occurrence of the afterglow, with the same remarkable tints and similar exceptional duration elsewhere—though some weeks later—shows that a similar cause was at work. Two points are clear. First, the cause alike of the greenness of the sun and the ruddy afterglow was in the air, not outside; and, secondly, the matter, whatever it was, which made the sun look green when he was seen through it, and which under his rays looked red, was high above the surface of the earth. It can readily be shown, so far as this last point is concerned, that matter at a lower level than sixteen miles could not have caught the sun’s rays so long after sunset as the glow was seen. On the other point it suffices, of course, to note that if some cause in the sun himself had been at work, the whole earth would have seen the green sun, while the afterglow would have found no explanation at all.