The map presented herewith shows the area of artesian water-bearing country in Australia as estimated by Dr. R. L. Jack, formerly Government Geologist. Since 1893 Queensland has been credited with the area of 376,832 square miles, this being equal to 56 per cent. of the estimated total. But that total has since been reduced to 569,000 square miles, and late information shows that the approximate area of the Queensland artesian basin, as ascertained by scaling off the most recent map issued by the Hydraulic Engineer, is 372,105 square miles--4,727 square miles less than the area given in his report for 1893. Yet the revised figures bring the Queensland artesian area up to 65 per cent. of the Australian total. The difference is accounted for by later information acquired in the field. Of the 372,105 square miles mentioned the area of 146,430 square miles has been tested and found to be less or more artesian or sub-artesian. Mr. Henderson says: "The flows from many of the artesian bores which at one time or another yielded artesian water have failed, but owing to the suspension of the hydraulic survey the available data are quite insufficient to admit of a trustworthy estimate being made of the area so affected." [Illustration: FLOWING ARTESIAN WELLS, WESTERN QUEENSLAND] The total supply of bore water has not been ascertained by actual measurement except from Government bores. But all possible reports of reputed flows have been obtained from the owners of private bores, and the figures cut down to 47 per cent. of the furnished estimates. This reduction is not an arbitrary one, however, but is the equivalent of the difference found to exist between the average estimate and the measured flow of such bores as the Hydraulic Department has been enabled to test.