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bears many strange embossed pictographs. In 

 time these trees are entirely worn away by the 

 violence of wind-blown ice-pellets and the 

 gnawings of the sand-toothed gales. 



Novel effects are here and there seen in long 

 hedges of wind-trimmed trees. These are 

 aligned by the wind. They precisely parallel 

 the wind-current and have grown to leeward 

 from the shelter of a boulder or other wind- 

 break. Apparently an adventurous tree makes 

 a successful stand behind the boulder; then its 

 seeds or those of other trees proceed to form a 

 crowding line to the leeward in the shelter thus 

 afforded. Some of these hedges are a few hun- 

 dred feet in length; rarely are they more than 

 a few feet high or wide. At the front the sand- 

 blasts trim this hedge to the height and width 

 of the wind-break. Though there may be in 

 some a slight, gradual increase in height from 

 the front toward the rear, the wind trims off 

 adventurous twigs on the side-lines and keeps 

 the width almost uniform throughout. 



During the wildest of winds I sometimes 

 deliberately spent a day or a night in the most 



55 



