As in the Yazoo delta, Ilex opaca is the only evergreen tree, and 

 it constitutes less than 1 per cent of the forests; a fact which 

 seems to be correlated with the richness of the soil. Vines are 

 common and native herbs inconspicuous, as in alluvial soils else- 

 where. Gleditschia and Diospyros seem more abundant here 

 than they are anywhere east of the Mississippi, where they usually 

 appear as if introduced. 



At Pine Bluff the aspect of the landscape seemed to change a 

 little, and by the light of the full moon I could see that much of 

 the country between there and Little Rock was undulating, and 

 short-leaf pines (probably both Pinus Taeda and P. echinata, the 



2 1 am not sure that I always distinguished these two small-leaved elms 

 rightly, never having seen U. crassifolia until a day or two previously. 

 3 See Science II. 36: 760-761, November 28, 1912. 

 ^ Some of this may have been H. Pecan, which looks very similar. 



