134 



WIND. 



All observations. 



MC MURDO SOUND 



Upper motion when wind at surTace 

 was 20 miles per hour or more from 

 the Sooth 



CIRRUS CLOUDS 



EREBUS SMORE 



MEDIUM CLOUDS 



Upper motion when wind at surface 

 was other than 20 miles per hour 

 or nnore from the South 



Surface Winds 



WESTERN PLATEAU 



SOUTH POLAR PLATEAU 



10% 



20/i. 



:to% 



r,o% 



^-l^.^t-ln^-^^-l^-^^-^^-l^-^^-^l-lUJ^u-J^-^^-l^-ll-^^-^^-i^-l^-^^-^^-^l 



/Vos 4 5i6 plol-ted fo y^ scale 



Fig. 47. Motion of atmosphere, Percentage fieciuency. 



