We observed the gradual rise of one of these immense piles of ice not far from our winter quarters. It appeared to be more than twenty-five feet above the ordinary ice around it. The cliffs upon whose sides we have seen icebergs form rise to the enormous height of two to four hundred feet. And the shore was so bold, and the depth of water so great at their bases, that a ship would probably strike her yards against their precipitous sides before she would ground. A vessel, therefore, being dashed against those adamantine walls in a gale of wind, would instantly fly to pieces, and not a seaman would be saved. "The distance to which icebergs float from the polar regions on the opposite sides of the line is, as may be supposed, very different. Their extreme limit in the northern hemisphere is judged to be about lat. 40 deg., though they are occasionally seen in lat. 42 deg. N., near the termination of the great bank of Newfoundland, and at the Azores, lat. 42 deg. N., to which they have sometimes drifted from Baffin's Bay. "But in the other hemisphere, they have been seen, within the last few years, at different points off the Cape of Good Hope, between lat. 36 deg. and 39 deg.. One of these was two miles in circumference and one hundred and fifty feet high, appearing like chalk when the sun was obscured, and having the lustre of refined sugar when the sun was shining upon it. Others rose from two hundred and fifty to three hundred feet above the level of the water, and were therefore of great volume below; since it is ascertained by experiments on the buoyancy of ice floating in sea water, that for every cubic foot seen above, there must at least be eight cubic feet below water." Captain Sir John Ross saw several icebergs in Baffin's Bay aground in water fifteen hundred feet deep! Many of them are driven down into Hudson's Bay, and, accumulating there, diffuse excessive cold over the entire continent; so that Captain Franklin reports that, at the mouth of Haye's River, which lies in the same latitude as the north of Prussia or the south of Scotland, ice is found every where, in digging wells, in summer, at the depth of four feet. "It is a well-known fact that, every four or five years, a large number of icebergs floating from Greenland double Cape Langaness, and are stranded on the west coast of Iceland. The inhabitants are then aware that their crops of hay will fail in consequence of fogs, which are generated almost incessantly; and the dearth of food is not confined to the land, for the temperature of the water is so changed that the fish entirely desert the coast." As to the relative thickness of common field ice where it remained unbroken through the winter, we found it varied from ten to twenty-five feet in thickness. We had an opportunity of judging, from the fact that we examined several openings which the natives had made in the ice off East Cape for the purpose of taking seal.