points he is working in the direction in which the 

 unsupported, that is along the lines of least 

 resistance. Nevertheless in proportion to the steepness of 

 the face CBD will the abrading action of the hammer be 

 negligible. That is if the face opposite to A be relatively 

 flat, then his blows are often registered as abrasions, so 

 long as he always strikes in the quadrant A O D as towards 

 D, and not as from D to A, while if the face C B D be 

 vertical no abrasions are produced. The analogy may be 

 extended to ice action. The glaciers of the recent Ice Age 

 even were not strong enough to smash a large moutonnee 

 form (such as Lambert Dome) clean through from stoss to 

 lee seite, they therefore compressed the structures on the 

 stoss seite and abrade*! them mainly by reflection of move- 

 ment. On the other hand they quarried the lee seite with 

 relative ease by the breaking and transportation of blocks 

 in the direction of least resistance or that of no support. 

 In proportion as the smashing action of a glacier was 

 developed, [in other words the stronger the glacier] so was 

 the stoss seite plucked and then rounded while the lee seite 

 remained jagged and unpolished. Even without knowing 

 the direction of the associated glacial striae, a student could 

 instantly tell the direction of glacial flow by the peculiar 

 ice markings on the lee seite of a moutonnee. For example 

 in a moutonnee with a lee seite profile as in figure 12, the 



profile A B would evidence no polishing action by ice, the 

 profile BC some polishing action, CD distinct polishing 



