transport, the smooth, eg: wind-polished surfaces became dull, the 
sharp edges were ronnded orf - 4d), and the evidences of wind- 
j wer yed by another type of abrasion, 
J 
> 
e commonly eidece destro 
i 
© 
T face of such stozes feeis harsh and gritty, like that of any 
stream-corne pebble,wrereas tre wind-smoothed surfaces that. have not 
been thus partially obliterated, heve a greasy feeling like talcum 
powders 7 
Without particular 2ffort mearly 2500 of these wind-cut stones 
were collected from all over the area considered in this report, in 
the midst of urdisturted gravel layers, in slumped materials along 
the faces of cliffs, embecded in till of the moraines, or lying on 
he surface. Scores more were fourd:in similar materials in various 
other parts of the Cape. J.2. Yoodworth (6) reported occurrences of 
them in areas which have mot yet teen re-studied. Literally millions 
of such stones must lie in the glacio-fluvial gravels and tills of 
this region. Their distribution is, however,: very irregular and 
rardom. One gravel pit may yield hundreds of these stones although 
rearby pits reveal scarcely any,or ore layer in an exposure may con- 
sist of them almost emtirely whereas the rest of the layers contain 
NONE « Corsidering the conditions under which they were produced, 
GhHIS 2S, Of Course, = rprisi 
? 
Nee. Shute (2), OWirs rk Bryan's i) plea ern of 
these wind Lai stones or 7 us, thought they were rmed at the 
surface by wind actioz and the rurned down into the ee ma- 
terials ty overturning of the upser few feet of soil during frost 
action. The authors do rot agree entirely with that conclusion, for 
a great xe obviously cut while the ice still 
stood r 2 s subsequent movements, and have 
‘not T ic It seems likely that most of 
the wind-scu Ipturing moplisned tefore the ice blocks had 
melted to produce } - Cecause there is very little wind- 
tloyn sard in any of 7 They would have been nearly or 
quite filled with ‘san 3 -stood open when the wind was 
driving large amounts of sard across the surface of the ground. In 
their opirior, therefore, =anyr ofthe ventifacts which now lie in 
the thin zone of disturted material near the surface were already 
embedded in the upper part of till ard gravel deposits before the 
disturtarce-by frost _and other asencies ever cheseeles iele 
