Annual report of the Board of Regents of the Smithsonian Institution . Bay Ice in Greenland Sea.(From photographs by Doctor Recamier.) Smithsonian Report, 1909.—Damas. Plate 2. I n» -*;- The Belqica in a Field of Polar Ice. ?m. Edge of Land Ice, West of Greenland. OCEANOGRAPHY OF SEA OF GREENLAND DAMAS. 375 and those of Norwegian sealers, it has become possible to constructfor the summer of 1905 very complete maps showing the conditionof the ice in the Greenland Sea. As an illustration we give herethe maps for the months of July and August (figs. 2 and 3). Theyenable us to determine some
Annual report of the Board of Regents of the Smithsonian Institution . Bay Ice in Greenland Sea.(From photographs by Doctor Recamier.) Smithsonian Report, 1909.—Damas. Plate 2. I n» -*;- The Belqica in a Field of Polar Ice. ?m. Edge of Land Ice, West of Greenland. OCEANOGRAPHY OF SEA OF GREENLAND DAMAS. 375 and those of Norwegian sealers, it has become possible to constructfor the summer of 1905 very complete maps showing the conditionof the ice in the Greenland Sea. As an illustration we give herethe maps for the months of July and August (figs. 2 and 3). Theyenable us to determine some of the chief laws of ice land ice is attached on the west to the Greenland coast. Itsexterior limits exceed but little the shallow depths of the conti-n e n t a 1 eastern limitof the polar ice cor-responds ratherclosely with theisobar of 1,500 me-ters which marksthe base of the con-tinental talus slope;that is to say, thefield which itcovers is enor-mously expandedtoward the northand gradually nar-rows to the southuntil, at the heightof the second cross-ing of the Belgica,the zone hasscarcely, accordingto observations ofCommander deGerlache, an extentof more than 2 or3 kilometers. Thedistribution
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