on the Richmond River, the Darling Downs, and the Atherton Tableland, behind Cairns.
"These are the largest basalt areas in Australia, the Darling Downs and Atherton containing each about 2,000,000 acres of basalt, the one chiefly black, and the other all red. The other conspicuous areas are the red basalt Isis and Woongarra scrubs, and north of Atherton the next basalt area is on the M'Ivor and Morgan Rivers, 40 miles north of Cooktown. From there I saw no basalt on the coast of the Peninsula, until somewhat surprised to find great piles of black basaltic stone, like artificial quarry heaps, in the dense Seaforthia palm scrubs ten miles west of Somerset.
Volcanic Evidence.
"Here, then, is a clearly defined but very intermittent line of volcanic action along our entire east coast for over two thousand miles. Yet to-day there is not only not one active volcano on the whole of that area, but not even one clearly authentic dead one. There is nothing to show whence came the basalt of the Darling Downs, the Big Serup, or the Atherton Tableland, unless in the last case the two deep freshwater lakes, Barrine and Eacham, the Barrang and Zeetcham of the aboriginals, represent the craters of extinct volcanoes.
"Whence, then, came the basalt spread along a narrow line of our east coast for two thousand miles, and all of it east of the Dividing Range? There is a lot of room for theories.. . .
"When the late Captain Audley Coote was laying the cable from New Caledonia to Sandy Cape, at the north end of Fraser Island, on the South Queensland coast, he passed a submerged mountain 6000 feet in height, and found a tremendous chasm, so deep that they could find no bottom, and had to work the cable round the edge. When he reached the coast of Fraser Island he got the same soundings as Cook and Flinders and the Admiralty survey in the sixties, six to eight fathoms, but there came a break in the cable in after years, located in that six and eight fathom area, and they found the broken cable hanging over a submarine precipice of eight hundred feet!
"That I read in Captain Coote's own manuscript
