] 
lex as a who 
f the comp ; dvanc- 
: al advance o ee rtions are a 
Pee prevailing winds, alia: It is not at all 
direction of the : ich winds ever blow. las 
sy irections in whic : r the dune-comp 
ing in all direc dvancing ove A nce 
all dunes a in line of adva 
uncommon to find sm Dune Park the main t 
thwest, 
he lake. At Du ard the nor 
3 ee t some small dunes advance ae m and the lake. 
is southeast, ye ‘ between the 
tuated cted from the 
r dunes are si rotecte 
=a Fe. in the lee of large ones ee we e of the east- 
iota northerly winds but feel the fu ce contrary to the 
risa southerly winds, and hence advan ht io cect oe 
nid ‘lin direction. It is thus a common Bb together, of 
acca to meet each other; when ae in the direction of 
e one and mov 
course the two dunes becom 
ee that 
it is easy to s 
th vailing winds. From this account it i as 
_ the prevailir 
in any direction, ote 
small dunes on the complex may advance - s blowing in other 
vided only that they are protected from oe 
directions, lex, however. is much more eres’ 
ne-complex, Ana . 
celsy dering in all directions. peti have been 
ate to be found the stationary eee. + liebe — 
Previously described, All stages of t setnrceiar Here and 
seen; the beginning, the climax, the ~ which reach down 
there the wind sweeps out great hollows, carved out by the 
almost to the water level. Great troughs are 
Wind, chieq 
angles, 
the com 
ne, 
vegetat 
Comple 
1S its t 
littl 
e Same, a 
tWice alike, 
