moon, be called into being, and the effects which have already been described will be produced. FIG. 17. M Let A B C D represent the earth, M the moon, and S the sun. There will be high water at B and D; and low water at A and C. The moon's attractive force at B evidently tends to raise the waters towards b, and to draw them from A and C towards b. Also, as the land at D is more attracted by M than the waters which lie above it, the land must recede to a certain extent from these loose waters and cause them to be proportionally elevated. Hence there is high water at B, where the moon is on the meridian, and also at the opposite meridian D. At new and full moon the attraction of the sun is added to that of the moon, and the tides are in consequence raised higher; but when the moon is in her quarters the attraction of the sun and moon act in different directions, the attraction of the one raising the waters, while that of the other has the effect of depressing them, and lower tides than usual are produced. The former are called Spring, and the latter Neap tides. In the preceding figure, spring tides are represented at b and d, because there the moon (M) and the sun (S) combine their attractive influence to raise the waters. In the following diagram, neap tides are represented. M is the moon in one of her quarters. It is evident that her power to raise the waters at A is counteracted and lessened by the attraction of the sun at B, which prevents the waters from falling so low there, and consequently from rising so high at A. In inland seas and lakes, as in the Baltic and Mediterranean, the surface is so small, comparatively speaking, that it is all equally attracted at the same time, and there is scarcely any tide perceptible. But in bays, harbours, and seas open in the direction of the great tidal wave from oceans, as in Baffin's and Hudson's bays and the Red Sea, there are regular and often very high tides. In the British Channel the tide sometimes rises forty or fifty feet; and in the Bay of Fundy it rises sixty, and often so rapidly that cattle feeding on the shore have been drowned before they could escape. At the mouths of large rivers opening in the direction of the tidal wave, as the Indus and the Ganges, tides often rise to the height of thirty, and even forty feet, and sometimes with destructive rapidity. Among the natural phenomena of the South Sea Islands, the tide is one of the most singular, and presents as great an exception to the ordinary theory as is to be met with in any part of the world. The rising and falling of the waters of the ocean appear, if influenced at all, to be so in a very small degree only, by the moon. The height to which the water rises varies but a few inches during the whole year, and at no time is it elevated more than a foot, or a foot and a half. The sea, however, often rises to an unusual height; but this appears to be the effect of a strong wind blowing for some time from one quarter, or the heavy swells of the sea, which flow from different directions, and prevail equally during the time of high and low water. But the most remarkable circumstance is, the uniformity of the time of high and low water. During the year, whatever be the age or situation of the moon, the water is lowest at six in the morning, and the same hour in the evening, and highest at noon and midnight. This is so well established, that the time of night is marked by the ebbing and flowing of the tide; and in all the islands, the term for high water and midnight is the same.-Compiled. THE DELUGE. The judgment was at hand. Before the sun The hemisphere of day: and, adding gloom The lightning flickered in the deluged air, Rose on the starless midnight, 'twas to show Oceans were blent, and the leviathan To where the eagle nestled. Mountains now And in that hour, Did no man aid his fellow. Love of life Was the sole instinct; and the strong-limbed son, Smothering the voice of love. The giant's foot Huge monsters from the plains, whose skeletons Has failed to crumble, with unwieldy strength Beat downward by the ever rushing rain, With blinded eyes, drenched plumes, and trailing wings, Staggered unconscious o'er the trampled prey. The mountains were submerged; the barrier chains Broke on his naked feet. On his grey head, In the green twilight dimly visible, Rolled the grim legions of the ghastly drowned, He smote his brow, And, maddened, would have leapt to their embrace, He stretched his arms forth toward the floating walls, And buried their last victim! Broke from the face of heaven, and sunlight streanfed Anon. NEGRO SLAVERY. I TRUST that at length the time is cómel when Párliament' will no longer bear to be told, that slave-owners' are the M |