disappeared, leaving no trace, have gone down in the vortex of a submarine earthquake, or a chasm created by a sudden shrinkage in the bottom of the ocean. From the facts above available it is reasonable to believe that the present continent of Australia is only a portion of the original, and that in some remote period it extended hundreds or thousands of miles to the eastward, probably including Lord Howe and Norfolk Islands and New Zealand, possibly New Caledonia. How came the ancient Cretaceous Ocean, which once covered all Central Australia, from the gulf to the Bight, to withdraw from the land, leaving nothing but marine fossils in the desert sandstone?
"Was the Cretaceous Ocean shallow all round this continent, and did it suddenly subside to fill some tremendous chasm caused by a sudden submarine shrinkage of the earth's crust, followed by the inland sea, which naturally rushed out into the vacancy?
"What seems the only real danger to Australia lies not in the eruptions of some suddenly created new volcano, or any ordinary earthquake, but in just such shrinkages in the sea bottom as occurred on the coast of Japan, off Fraser Island, and many other localities, including Lisbon and Port Royal.
"If such a subsidence were to come under Sydney, Melbourne, Adelaide or Brisbane, it might be of such a magnitude that the whole city would disappear into the gulf.
"We know nothing whatever of the awful forces at work beneath the crust of the earth, and nothing of the internal fires, or that awful subterranean abode where Shelley said 'the old earthquake Demon nurses her young Ruin.' The history of volcanoes and earthquakes is an appalling record of lost countless millions of lives and awful destruction.
"One Pekin earthquake destroyed 300,000 people, one in Naples 70,000, another at Naples 40,000; and we are not far from July, 1902, when the volcano of Mount Pelee, in the island of Martinique, wiped out the town of St Pierre and 30,000 inhabitants.
"Still nearer is that 18th April, 1906, when the San Francisco earthquake killed over a thousand people, and did damage to the extent of sixty millions.
