ABORIGINAL FISHERIES AT BREWARRINA. ely 
are still standing. The average width of the bed of the 
river is about five chains at this place. 
From these indications we may safely infer that the 
river, in the course of a long period, has cut its way through 
about fifteen chains of the Desert Sandstone, that is, from 
about the point D on the diagram upward to the existing 
bar. Mr. R. Daintree was the first to name rock of this 
description. Speaking of “horizontal beds of coarse grit 
and conglomerate,’”’ he adds, “‘I have called this upper 
conglomerate series ‘Desert Sandstone,’ from the sandy, 
barren character of its disintegrated soil, which makes the 
term particularly applicable. . . The denudation of the 
Desert Sandstone since it became dry land, has been 
excessive.’” Rev. J. H. Tenison-Woods,’ in speaking of 
this kind of rock, says, ‘“Wherever met with, it bears 
marks of being much denuded. Water seems easily to have 
broken it up. The age of the Desert Sandstone may be 
the equivalent of the Upper Cretaceous.”’ 
At the western extremity of the outcrop of Desert Sand- 
stone, about the point F on my diagram, some schists are 
met with, for a description of which I will quote from the 
Report of Mr. HK. F. Pittman, who has visited that district: 
“In the banks of the Darling, at the western end of the 
town of Brewarrina, Palzeozoic slates and schists, with 
interbedded quartz veins, occur. These schists are inclined 
at a high angle, and are probably of the Upper Silurian age. 
These rocks in the river bank are overlaid by horizontal 
beds of Desert Sandstone, of the Upper Cretaceous age.’” 
During the progress of cutting out the river channel as 
above suggested, fragments of rock of various dimensions 
were worn off and broken up by the water, and formed into 
* Quart. Journ. Geol. Soc., (London, 1872) Vol. xxvuiit., p. 275. 
- #«The Desert Sandstone’”’—Journ. Royal Society, N.S.W., Vol. xx11., 
pp. 291 and 296. 
% Ann. Rep. Dept. Mines, N. S. Wales, 1902, p. 119. 
