205 



5. Auroral Frequency at Cape Royds in Relation to 

 Geographic Direction. 

 The accompanying diagram (plate xx., facing page 206) 

 illustrates the relative frequency of auroral phenomena seen in 



Fig. 2. 

 Distribution in Azimuth of Auroral Phenomena at Cape Eoyds. 

 Graph to illustrate the relative frequency of aurorae seen at 

 Cape Royds in relation to geographical direction. Radius sectors 

 to scale of l/40th inch equals one hour's display. 



relation to azimuth bearing. Figures for June, July, and 

 August only have been considered. No account is taken of 

 auroral glows on the horizon or reflected from clouds (see 

 text fig. 2). 



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