They made fire by the stick and groove method, but their acquaintance with the fire-drill is uncertain[371]. The stone implements are the subject of much discussion. A great number are so rude and uncouth that, taken alone, we should have little reason to suspect that they had been chipped by man: some, on the other hand, show signs of skilful working. They were formerly classed as "eoliths" and compared to the plateau implements of Kent and Sussex, but the comparison cannot be sustained[372]. Sollas illustrates an implement "delusively similar to the head of an axe" and notes its resemblance to a Levallois flake (Acheulean). J. P. Johnson[373] points out the general likeness to pre-Aurignacian forms and there is a remarkable similarity of certain examples to Mousterian types. Weapons were of wood, and consisted of spears pointed and hardened in the fire, and a club or waddy, about two feet long, sometimes knobbed at one end; the range is said to have been about 40 yards. In the native diet were included "snakes, lizards, grubs and worms," besides the opossum, wombat, kangaroo, birds and fishes, roots, seeds and fruits, but not human flesh, at least normally. Like the Bushmen, they were gross feeders, consuming enormous quantities of food when they could get it, and the case is mentioned of a woman who was seen to eat from 50 to 60 eggs of the sooty petrel (larger than a duck's), besides a double allowance of bread, at the station on Flinders Island. They had frail bundles of bark made fast with thongs or rushes, half float, half boat, to serve as canoes, but no permanent abodes or huts, beyond branches of trees lashed together, supported by stakes, and disposed crescent-shape with the convex side to windward. On the uplands and along the sea-shore they took refuge in caves, rock-shelters and natural hollows. Usually the men went naked, the women wore a loose covering of skins, and personal ornamentation was limited to cosmetics of red ochre, plumbago, and powdered charcoal, with occasionally a necklace of shells strung on a fibrous twine.