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PLATE XCVIL DISINTEGRATING GLACIER-ICE. 



FIG. 1 (Map B). From a photograph by R. W. SKELTON (Sk. 231, -plate), Feb. 8, 

 1902 ; showing a much weathered portion of the Pinnacled Ice of M'Murdo 

 Sound. 



FIG. 2 (Map B). From a photograph by A. B. ARMITAGE (A. 7, ^-plate), Dec. 2, 

 1903 ; looking E. along the right lateral moraine of Blue Glacier across 

 M'Murdo Sound. 



In both pictures glacier-ice is to be seen rapidly disappearing under the 

 influence of summer sunshine in the presence of much morainic debris. In 

 the pinnacled ice, grit and gravel are so far concentrated into heaps upon the 

 surface of solid ice that rivers of water are to be found running in all direc- 

 tions and burrowing deep courses in its substance. 



In the lateral moraine (Fig. 2) a perfect torrent of water rushes down on a bed 

 of hard green ice between the moraine heaps on the right and the summer-wasted 

 ice-cliff of the glacier on the left. 



The season is but short. In December and in January, with a clear sun, 

 running water may be heard wherever bare rock and ice occur together, but 

 never otherwise. 





