PLATE XXVII . BULLDOZING AWAY THE SNOW ACCUMULATION WITH LOW GROUND 

 PRESSURE D-8 TRACTOR AND 16-FOOT BLADE. ROYAL SOCIETY RANGE 

 ACROSS MCMURDO SOUND IN BACKGROUND. 



wmmmm mm mmmmmmm 3* 



PLATE XXVIII. EAST SIDE OF ICEHOLE HUT SHOWING SNOW ACCUMULATION 

 PARTIALLY REMOVED. MT . DISCOVERY IN LEFT BACKGROUND. 



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