27 However, the rest of the argument is incorrect. The rest of the argument is either that, because the Commonwealth Parliament has power to legislate with respect to taxation, the States cannot, or, alternatively, it may be that the scheme of uniform taxation which was held to be valid in South Australia v The Commonwealth (supra) somehow has the effect of rendering State laws providing for rates on real property invalid, pursuant to s 109 of the Commonwealth Constitution. However, as I have pointed out, the taxation power is not one which is exclusive to the Commonwealth, but one which is concurrent, so that laws imposing taxation can be passed by both State and Federal Parliaments. Further, s 109 renders invalid or inoperative only State laws which are inconsistent with relevant Commonwealth law. There is no Commonwealth law relevant to local council rates, since the Commonwealth has not enacted legislation "covering the field" of rates on land. This ground, too, must fail.