44/97 They were all one year birds, and seemed exceptionally shy; they appear to be attracted to the ship by a fearful curiosity._7_ A chain of bergs must form a great obstruction to a field of pack ice, largely preventing its drift and forming lanes of open water. Taken in conjunction with the effect of bergs in forming pressure ridges, it follows that bergs have a great influence on the movement as well as the nature of pack. |