2. _Glacier Ice-blocks._ These, which indeed have often been called icebergs, are distinguished from true icebergs not only by their size, but also by the way in which they are formed. They have seldom a cross section of more than thirty or forty metres, and it is only exceptionally that they are more than ten metres high above the surface of the water. They originate from the "calving" of glaciers which project into the sea with a straight and evenly high precipitous border. Such glaciers occur in large numbers on the coasts of Spitzbergen, and they are there of the same height as similar evenly-cut glaciers on Greenland. According to the statement of the Dane PETERSEN, who took part both in KANE'S expedition in 1853-55 and in Torell's in 1861, the glaciers, for instance, at Hinloopen Strait in Spitzbergen, are fully equal, with respect to their size and the height of their borders above the sea-level, to the enormous and much bewritten Humboldt glacier in Greenland. In Spitzbergen too we find at two places miniatures of the Greenland ice-currents, for instance the glacier which filled the North Haven in Bell Sound, another glacier which filled an old Dutch whaling haven between Recherche Bay and Van Keulen Bay, a glacier on the north side of Wablenberg Bay and perhaps at that part of the inland ice marked in my map of the expedition of 1872 as a bay on the east coast of North-east Land. It is even possible that small icebergs may be projected from the last-mentioned place, and thence drift out into the sea on the east coast of Spitzbergen.