On turning to the occurrence of "human fossils" in Australia we find the geological evidence for any great antiquity of man on this continent to be very scanty and inconclusive. This does not, however, imply that man's existence in Australia will not eventually be proved to date back far beyond the period of the "kitchen middens" of modern aspect, such as are now exposed on the slopes behind the sea-beaches, and on the inland camping grounds. Almost all the records of Australian human remains that have been found in other than ordinary burial places, have proved to be of comparatively recent date. For example, the partially lime-encrusted body found in the cave in the Mosquito Plains, north of Penola, South Australia, recorded by Tenison Woods, is that of an aborigine who, in the early days of settlement, crawled into the cave in a wounded condition. Other occurrences of human remains in caves, but of fairly recent date are, a child's skull found in a small cave at Bungonia, Co. Argyle, New South Wales, recorded by Etheridge; and the non-petrified limb-bones found in a cave at Wellington, New South Wales, recorded by Krefft, which were probably washed in from the surface in recent times. As regards the former, in Western Australia, as observed by Froggatt, the natives at the present time seek shelter in caves, where these occur, instead of building mia-mias. A more interesting, because probably much older, occurrence of human remains has been described by Etheridge and Trickett from one of the Jenolan Caves (Skeleton Cave); and those authors conclude from "The great lapse of time that must have accrued to enable the changes already outlined to have taken place since the introduction of the remains into the Skeleton Cave," that these remains are ancient. [Illustration: =Fig. 150--Impressions of Footprints in dune sand-rock.= Warrnambool, Victoria. 1/9 nat. size. (_F. C. Photo_). (_Warrnambool Museum_). ] Curious footprints supposed to resemble impressions of human feet with accompanying impress as if made by natives seated, have been long known from the older sand-dune rock of Warrnambool. They were found at Kellas' Quarry, on the Port Fairy Road in 1890 and at a depth of 54 feet. In November, 1912, a further discovery of similar footprints were found at Messrs. Steere Bros.' Quarry, Warrnambool, at a depth of 10 feet, as a block of stone was being removed for building purposes. These footprints are even more obscure than those previously found, and it would be unsafe to affirm their human origin, although they are suggestive of such. Their antiquity is certainly great, since the lavas and tuffs of the Tower Hill district are found overlying this old dune-rock. Other footprints associated with these resemble those of the Dingo and a gigantic bird, possibly like _Genyornis_. =Probable Origin of Aborigines.--=