The quantity of fallen timber lying upon the island prompted the curiosity of Flinders. Trunks of trees lay about in all directions "and were nearly of the same size and in the same progress towards decay; from whence it would seem that they had not fallen from age nor yet been thrown down in a gale of wind. Some general conflagration, and there were marks apparently of fire on many of them, is perhaps the sole cause which can be reasonably assigned; but whence came the woods on fire? There were no inhabitants upon the island, and that the natives of the continent did not visit it was demonstrated, if not by the want of all signs of such visits, yet by the tameness of the kangaroo, an animal which, on the continent, resembles the wild deer in timidity. Perhaps lightning might have been the cause, or possibly the friction of two dead trees in a strong wind; but it would be somewhat extraordinary that the same thing should have happened at Thistle's Island, Boston Island, and at this place, and apparently about the same time. Can this part of Terra Australis have been visited before, unknown to the world? The French navigator, Laperouse, was ordered to explore it, but there seems little probability that he ever passed Torres Strait. "Some judgment may be formed of the epoch when these conflagrations happened, from the magnitude of the growing trees; for they must have sprung up since that period. They were a species of eucalyptus, and being less than the fallen tree, had most probably not arrived at maturity; but the wood is hard and solid, and it may thence be supposed to grow slowly. With these considerations, I should be inclined to fix the period at not less than ten, nor more than twenty years before our arrival. This brings us back to Laperouse. He was in Botany Bay in the beginning of 1788, and, if he did pass through Torres Strait, and come round to this coast, as was his intention, it would probably be about the middle or latter end of that year, or between thirteen and fourteen years before the Investigator. My opinion is not favourable to this conjecture; but I have furnished all the data to enable the reader to form his own opinion upon the cause which might have prostrated the woods of these islands." The passage is worth quoting, if only for the interesting allusion to Laperouse, whose fate was, at the time when Flinders sailed and wrote, an unsolved mystery of the sea. Captain Dillon's discovery of relics at Vanikoro, in 1826, twelve years after the death of Flinders, informed the world that the illustrious French navigator did not pass through Torres Strait, but was wrecked in the Santa Cruz group.* (* See the author's Laperouse, Sydney 1912 pages 90 et sqq.) The fire, so many signs of which were observed on Kangaroo Island, was in all probability caused naturally in the heat of a dry summer.