33 



differences in river heights from September 1926 to September 

 1927 and from September 1927 to June 1928 (Fig. 1). 



The profile (Fig. 2) shows the elevation of the points men- 

 tioned, and the general topography from the road to the river. 

 The ground from the high point of the levee to the point 

 designated as "A" was practically bare of vegetation in October 

 1926. A to B was covered with water at the time of the first 

 S^ ■■ _ 



30- 



10 



Bluer Sto^^cs Sept nZh to Jun^ 112 S 



10 /v^ . 2 . Frofilc of Lc 



uce 



HORIZONTAL SCALE r'=loo' 



visit. C is the region called the "Island," which when the level 

 of the river drops below twenty-two feet is continuous with 

 the rest of the levee. 



In October 1927 the writer again visited the levee, and the 

 change that had taken place was astonishing. The water 

 between points A and B was gone. The region from the top of 

 the levee to A was one complete mass of vegetation. The 

 stretch from A to B as the photograph shows, consists of patches 

 of plants scattered over the bare ground. A strip about 500 

 feet long and extending from the top of the levee to the water's 

 edge was selected as a typical area of the newly vegetated levee 

 and carefully botanized 



One of the striking features of the vegetation was the 

 complete mat of Eragrostis hypnoides (Lam.) B.S.P. which 

 covered all the slope down to point A. Through this carpet of 

 grass the other plants protruded. 



