Note Footnote a: — APPENDIX H.

The report for 2nd October, 1896, brings records up to date. By map it is shown that not only does the water-bearing country extend over 56 per cent. of the area of Queensland, but also continues into New South Wales and South Australia, and enters Western Australia. It "marks the position of the ancient Cretaceous sea which connected the Gulf of Carpentaria with the Great Australian Bight," and "divided the continent into two islands." "They were," wrote Dr. R. L. Jack, "laid down by this sea; their present position is due to subsequent general upheaval, and they lie directly and unconformably on schists and slates of undetermined age, or on granite or gneiss. Except in Queensland, where they are overlaid here and there by the remains of the Upper Cretaceous or Desert Sandstone formations which have not been removed by denudation, they seem to be covered to a considerable extent by Tertiary rocks. The Desert Sandstone beds lie horizontally but unconformably on those of the Rolling Downs, which dip to the south." a