102 



PLATE LIL THE PRESSURE EIDGES AT CAPE CROZIER. 



From photographs by R. W. SKELTON (Sk. 180-182 inclusive, ^-plates), Oct. 18, 

 1902; looking E.-S.-E. from the Knoll (1000 feet), over the Great Ice 

 Barrier. (Map B.) 



The Knoll is the farther hill in Fig. 1, Plate XLIX. It is also to be seen on 

 the extreme right of Plate XLIV. Standing on its summit, one may look over 

 the apparently boundless snow-plain of the Great Ice Barrier to the S. and S.-E. ; 

 and in this picture all that lies to the right of the white ice-cliff is Barrier, and the 

 white ice-cliff is its northern edge. The sea was frozen over in October when this 

 set of photographs was taken. All that lies to the left of the white ice-cliff there- 

 fore is sea-ice, and on it are to be seen cracks running across the bay, and a 

 small army of Emperor Penguins busy with their young. This is at present the 

 only Emperor Penguin "rookery" known (see Plate LIII. for an account of its 

 discovery). On the right of the picture can be seen the rock cliffs of Ross Island, 

 against which the Barrier breaks, and the tumult of cracks and pressure hummocks 

 thus caused are indistinctly seen beyond (see also Plates XLIX. to LIV.). 



