THE HAWKESBURY SANDSTONE. 79 
‘ in 
derived from a desert interior, where the moisture was less. 
£olian sandstone in China.—Baron Richthofen, in his large 
work on China, describes a formation which covers vast areas in 
‘country. He mentions it as forming cliffs or bluffs on the 
Yellow River, which in some places rise to a height of 500 feet. 
In many places, he says, it reaches a thickness of 1,500 feet. It 
extends inland over all the high plains, from the alluvial flats of 
the Gulf of Tshili, over the Taihhang-shan Mountains up to plat- 
taux 1,800 métres high, and even to an elevation of 2,400 métres 
(over 7,500 feet) above the sea in the Wer-tai-Shan Mountains, 
Northern Shansi. It stretches south of the hilly grounds beyond 
ae Pigg es e. 2 
___ Dr Geikie, in his Pre-historic Europe, from which the above is 
: taken, adds (p. 167) :—“It may be that we have hitherto under- : 
is carried on the wings of the wind and 
for distances of several hundred miles, 
nitiisiieliinasadias 
Pumpelly, Amer, Jom Science and Art, vol. 17, for 1879, p.139%. 
