On the American or western side the tendency is to flow outwards, but there is only one outlet, along the east coast of Greenland. The in-flow is insignificant, Bering Strait is shallow, and but a small volume of water finds its way within the Arctic area by that opening. The flow from all the American rivers, except the Mackenzie and Colville, is at once checked by land in front of their mouths. Hence the whole tendency of aqueous movement is to flow out, while there is only one means of escape. The consequence of this general drift outwards, with but one corresponding outlet, is very remarkable. The harvests of ice are carried across the Arctic Ocean until they are brought up by the American coast and islands, where they are completely stopped. Then the ice gradually increases from annual snow falls and other causes until it becomes upwards of a hundred feet in thickness. There is some movement in the summer, and a tendency eastward to the north of Ellesmere Island and Greenland, to join the Greenland current. The other straits and channels are too shallow for such ice to pass. In one place alone, between Melville and Banks Islands, there is a drift of this heavy ice into the Parry Archipelago, for a distance of 500 miles, but it is then stopped by King William Island. Otherwise the only outward current for the heavy polar ice is down the east coast of Greenland. Even there the great body of ice comes from the Arctic Ocean itself, and but a small part is due to the escape of ice that has been pressed upon the western land. The outward current of Baffin’s Bay only carries off the ice of one or two years’ growth, which has formed in the bay itself and in the straits and channels leading into it. There is thus a vast accumulation along the outer shores of the western side, and the rising tendency of Arctic lands no doubt increases the difficulty of escape, and the consequent secular and unchanging block all along the western outer shores of the Arctic Ocean. We may now turn to the quadrants of which mention has already been made on page 4. On the eastern side the first quadrant extends from the Greenwich meridian to 90° E., on an arc of the Arctic Circle, with two converging lines each 1410 miles long. In this quadrant we have Arctic Norway and Russia to Cape Chelyuskin, and the Spitsbergen, Franz Josef, and Novaya Zemlya groups of islands. It may be called the Spitsbergen Quadrant. The second quadrant on the eastern side includes the Siberian coast from Cape Chelyuskin to Bering Strait--the Siberian Quadrant. The third quadrant, being the first on the western side, includes Greenland, Baffin’s Bay, and Baffin, North Devon, and Ellesmere Islands. The fourth quadrant, being the second on the western side, contains the northern coast of the American continent, and the Parry Archipelago. It is the American Quadrant.