94 
PROCEEDINGS OF THE ROYAL SOCIETY OF QUEENSLAND. 
usually reddish in colour. If water were available for irrigation they 
would be highly productive, for the nature of their origin, viz., wind- 
blown detritus from all kinds of formations, ensures that they are rich 
in all mineral plant foods. 
At Alice Springs, with irrigation, magnificent citrus fruit and 
grapes are grown, and excellent vegetables can be produced wherever 
water is available. 
REFERENCES. 
David, T. W. E. (1932). Explanatory Notes to accompany a New Geological Map 
of the Commonwealth of Australia. Sydney. 
Madigan, C. T. (1931). “The Physiography of the Western Macdonnell Ranges, 
Central Australia. * * Geogr. J. lxxviii, No. 5. 
(1932a). “The Geology of the Western Macdonnell Ranges, Central 
Australia. * ’ Quart. J. Geol. Soc. London, lxxxviii. 
(1932b). “The Geology of the Eastern Macdonnell Ranges, Central 
Australia. ” Trans. Boy. Soc. S. Austr. lvi. 
(1933). “The Geology of the Macdonnell Ranges and Neighbour- 
hood, Central Australia.* ’ B'ep. Austr. and N. Zeal. Assoc. Adv. Sci. xxi. 
