THE METAMORPHIC ROCKS OF ADELIE LAND. 8T 1 1,1. \\KLL. 217 



Fig. 2. The lower part of the glacier wall at John o' Groats, where it rests on a rocky 

 floor below sea level, and where it is darkened by inclusions of rock detritus. The curved 

 lines are big conchoidal fractures which are probably connected with the presence of a 

 steep rock wall immediately on the right of it. Pancake ice in the foreground. 



PLATE XV. 



Fig. 1. The ridges are crowned with numerous small peaks and possess the character 

 of a miniature mountain range. Cape Denison. 



Fig. 2. The narrowest valley at Cape Denison. The rough surface has been 

 caused by frost action. 



PLATE XVI. 



Fig. 1. A band of epidote biotite schist (No. 153) which has been more resistant 

 to weathering than the surrounding granodiorite gneiss. The reverse is usually the case 

 at Cape Denison. 



Fig. 2. A steep wall of granodiorite gneiss at Cape Denison with a black amphibolite 

 band at the base. 



PLATE XVII. 



Fig. 1. The northern end of Lake II. which is nearly frozen over. The furrowed 

 and encrusting character of the lake ice is due to freezing during agitation by the winds. 

 Skua gulls are bathing on the edge of the water. 



Fig. 2. The broad valley in which the hut was situated at Cape Denison. The 

 photograph was taken while low surface drift was sweeping down the valley. The 

 surface drift produces the haziness over portions of the rocks. The feet of the figure 

 on the right are invisible for the same reason. 



PLATE XVIII. 



Fig. 1. Highly polished rock which is characteristic of the peripheral area below 

 the 40ft. contour level at Cape Denison. 



Fig. 2. A glacial pavement. A portion of a block about 9ft. square with well marked 

 parallel striae trending N. 32 E. at Cape Denison. 



PLATE XIX. 



Fig. 1. The " wave-sorted moraine " or " lower moraine " at Cape Denison, showing 

 a collection of large rounded boulders. 



Fig. 2. A large boulder of silicated limestone found on the moraine at Cape Denison. 

 It has probably not been carried far. A parallel set of ice striae can be seen on the 



