EKOSION AND SEDIMENTATION 311 



tallest trees, and later uncover all and even remove the dune 

 upon which they stood. 



In some of our Western states, as Kansas and Nebraska, 

 there are wide stretches of sandy soil which in some places 

 forms dunes. On some of the cultivated land great annoy- 

 ance is caused by the soil blowing when it is fresh-plowed ; at 

 times the soil drifts along fence rows much as snow drifts in 

 whiter. American Forestry says : 



When the soil is broken, the soil blows so badly that hundreds 

 of " nesters " who have tried to make a start in this region have 

 moved out only when their fields have blown into the next sec- 

 tion or county. On a bright day in spring in the sandhill section 

 of Kansas, with what is known in that country as only a brisk 

 wind, it is possible to locate all the plowed land for from fifteen 

 to twenty miles around by the dense clouds of sand that stand out 

 against the blue heavens like pillars of gray smoke. 



