DISTRIBUTION FROM A GROWTH OF THE SANDHILLS. 143 



the result of independent observation, but of the impression left 

 on the author's mind after a study of the descriptions of several 



observers. 



In this diagram it will be seen that the cusps are represented as 

 sharp pointed at their extremities, and the steep lee slope extends 

 right up to the end of the cusp. When I first saw the Clifton 

 sandhills, in October 1901, the easterly winds had not set in, and the 

 sandhills retained the form that had been impressed on them by a 

 long period of west-south-westerly winds, and this form was that 

 represented in fig. 2, which is from an actual survey of a pair of isolated 



/'"■■ 



Fig. 2. — Plan of two sandhills near Clifton. 



sandhills made in December. The sandhills had then been slightly 

 modified by east-north-easterly winds, but not to any important extent, 

 and the main features, especially the rounded outlines of the cusps 

 and the restriction of the steep lee slope to the central portion of the 

 sandhill, could easily be restored to what had been noted in October, 

 when the opportunity of making a survey failed. If any confirmation 

 were required of this statement it is to be found in the delineation of 



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