698 The American Naturalist. [August, 
let called Dugway, quite as far from the lake shore as the lakes 
we are discussing, where the wind drifts the sand very con- 
siderably. Another one is said to occur between Sand Bank 
and Centerville in the same town. A visit to the former 
showed that the wind was actually moving a hill east, moving 
it grain by grain, but nevertheless very rapidly. The high- 
way running north from Dugway formerly passed along the 
east side of the hill near its base. Old residents told me that 
the hill was originally wooded. After being cleared away it 
was cultivated and finally was seeded and used as a pasture. 
The work of the wind began when it was used as a sheep pas- 
ture. The sand drifted into the road until the people were 
hardly able to haul loads over it. An attempt was made to 
stop the sand by building a high board fence. The sand im- 
‘mediately began to drift against the fence and finally drifted 
over it, so that now only the tops of the boards can be seen. 
Failing in their attempt to fence out the sand, the people have 
bridged it over with planks for a distance of forty rods or more. 
All this goes to show that the west winds in this region are 
unusually strong, and produce a decided effect upon other 
features of the region as well as upon the lakes.’ 
UNIFORMITY IN MOOR FLORA. 
One of the strongest pieces of evidence to support the view 
that the whole face of the country was once covered with @ 
vegetation much more like that in our moors than like that 
upon our highlands, is the uniformity of the moor flora. The 
sphagnous moors are isolated, but we find the same species of 
plants in them all. It is impracticable for plants to migrate 
from one to another at the present time. The moors remind 
one of an island in the open sea—islands which preserve to US 
a primitive flora. 
So constantly are certain species present in the moors of the 
whole eastern United States, that upon entering a moor one 
begins to look for certain species, and at once misses any n° 
that does not happen to occur in that particular moor. An 
1 Since writing the above, Warming’s Oekologische Pflanzengeographic has Y 
peared, and in it, p. 365, is described the effect of the wind upon the lakes and 
moors of Denmark. The effect is the same as here described. . 
