Occasionally, when passing nearer to a ship than was deemed safe, a waterspout has been dissipated by a cannon-shot, as represented in our engraving. Such are the usual appearances and actions of waterspouts. They are not, however, properly named, being simply whirlwinds at sea, instead of whirlwinds on land. Professor Oersted suggests the name "storm-pillar," as being a more appropriate term. It does not follow that a large ship would inevitably be destroyed if brought within the vortex of a waterspout; but it is certain that she would run the risk of being dismasted, and perhaps thrown on her beam-ends. Navigators have not had sufficient experience of the power of waterspouts to pronounce authoritatively on that point,--and it is to be hoped they never will. Captain Beechy, in his narrative of a voyage to the Pacific, describes one into which his ship actually entered, and from which he received extremely rough handling before he was set free. But this might not have been a very large waterspout; and it is not absolutely certain whether he was quite within its vortex, or was merely brushed by the skirts of its outer garment. Certain it is that waterspouts vary in size and in power; for we read of them passing from the sea to the land, and there rooting up trees, unroofing and overturning houses, dismounting cannon, emptying fish ponds, half emptying harbours, and otherwise exhibiting a degree of force that would undoubtedly sink the largest vessel that ever was built, if brought thoroughly to bear upon it. The rate of motion in waterspouts varies. Sometimes they revolve slowly, sometimes with the utmost rapidity. They often produce violent noise, as, indeed, might be expected; and they are generally accompanied by thunder and lightning, though not invariably so, for they are sometimes observed when the heavens are clear and the sea calm. CHAPTER EIGHT. THE ARCTIC SEAS--THEIR CHARACTER, SCENERY, AND ATMOSPHERICAL ILLUSIONS. There is a tendency on the part of most writers on the subject of Polar Regions--especially compilers--to dwell disproportionately on the gloomy side of the picture; insomuch that readers are led, not to over-estimate the grand and the terrible aspects of the polar oceans, but to under-estimate the sweet and the beautiful influences that at certain periods reign there.