Since its discovery, the Malaspina glacier has been in a nearly stagnant condition around most of its periphery. As a result of ablation, in this outer portion of the glacier, there has developed a fringe of moraineveneered ice, parts of which support forest growth. Back of this morainic fringe the ice plateau has been so smooth as to permit easy sledging in all directions by the several parties (the last in 1897) which have crossed it on their way to mount Saint Elias. Such was apparently its condition even as late as the summer of 1905; but in 1906 that part of the Malaspina glacier which borders Yakutat bay was transformed to a sea of crevasses, across which travel was utterly impossible. This crevassing has been caused by a great forward thrust, which has not only broken the ice surface, but has also pushed forward the glacier margin, . . .