Excerpt: ...holding on our course. To the westward we saw some icebergs of incredible size, and in the afternoon passed very near one whose summit could not have been less than four hundred fathoms from the surface of the ocean. Its girth was probably, at the base, three-quarters of a league, and several streams of water were running from crevices in its sides. We remained in sight of this island two days, and then only lost it in a fog. January 10.