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PLATE XCIX. THE PINNACLED ICE OF M'MURDO SOUND. 



From a photograph by E. W. SKELTON (Sk. '232, ^-plate), Feb. 8, 1902 ; looking 

 W. across the Pinnacled Ice to the Dailey Islands. (Map B.) 



The tongue of Koettlitz Glacier running some twenty miles with a north- 

 westerly direction in M'Murdo Sound, is covered with blown sand and gravel, and 

 an abundance of morainic debris, which by absorbing the sun's radiant heat has 

 eaten deeply into the surface-ice. 



Fantastic pinnacles, and mushroom-shaped tables, deep river-beds of ice and 

 colonnades, with grottos of blue-green ice screened off by glittering icicles, all 

 thrown confusedly together with sand-heaps, rocks and boulders, give the weird 

 and fanciful impression which is here produced. 



