In the East Indies, thousands of lantern-flies, sending forth a beautiful illumination, are seen dancing at night amid the banyan trees; and candle-flies, of which we give a cut at the head of this article, have a similar power. These are a few of the facts connected with the luminous qualities of plants and animals. We do not fully understand the uses of these powers, but we can see that the subject of light is very extensive, and that the study of it leads to a great many curious and wonderful realities. Herons and Rooks. At Dallam Tower, in Westmoreland, England, there were, some years ago, two groves adjoining the park, one of which, for many years, had been resorted to by a number of herons; the other was one of the largest rookeries in the country. The two tribes lived together for a long time without any disputes. At length, the trees occupied by the herons, consisting of some very fine old oaks, were cut down in the spring of 1775, and the young birds had perished by the fall of the timber. The parent birds immediately set about preparing new habitations to breed again; but as the trees in the neighborhood of their old nests were only of a late growth, and not high enough to secure them from the depredations of the boys, they determined to effect a settlement in the rookery. The rooks made an obstinate resistance, but, after a very violent contest, in the course of which some on both sides lost their lives, the herons at last succeeded in their attempt――built their nests, and brought up their young. The next season, the same contests took place, which terminated, like the former, by the victory of the herons. From that time, peace seemed to have been agreed upon between them; the rooks relinquished possession of that part of the grove which the herons occupied; the herons confined themselves to those trees they first seized upon, and the two species lived together in as much harmony as they did before their quarrel. ―――― When Mr. West, grandson of Sir Benjamin, was in this country, exhibiting the great picture of “Christ rejected,” he employed a man to hang it up in the exhibition-room. Accordingly, the latter brought in a bill “for hanging Christ rejected by your grandfather.” [Illustration: _Dr. Vince seeing the images of a ship in the air._] Spectral Illusions. The atmosphere has the power of bending the rays of light, so that we see the sun before it actually rises above the horizon, and after it has actually sunk below it.