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278 QUEENSLAND AGRICULTURAL JournaL. [1 Aprin, 1902. 
In Australia there have been vast changes wrought by drifting or blown 
sand, for it has been asserted by Rev. Tennison Woods that what is known as 
the Hawkesbury sandstone is composed of blown sand carried from the western 
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TRAVELLING SAND NEAR MILPARINKA. 
interior; this sand, ere it became stone, buried our ancient forests of huge 
carbonaceous plants which were growing to form our coal measures. On a 
small scale this is taking place out west, and threatens the total destruction of 
land to an extent no one can define 
The sands are set in motion originally by many and_ often slight 
occurrences, but certainly by the destruction of wind breaks or belts of scrub 
by bush-fires or the axe, overstocking, and the loosening of ancient sand-hills 
(themselves the remains of more ancient sand-drifts which have taken place 
Dry Laxe Horst, sHowiIne THE SAND ENCROACHING. 
