And so the descendants of this Asiatic horde, having migrated at a remote period to Italy, preserved the burial traditions of their remote ancestors, and formed their tombs after the model of the tent or cave, according as they were constructed on the level plateau or in the rocky brow of a hill. In further illustration of this theory he says that in olden times when a member of the Tartar tribe died, the tent in which he breathed his last, with all its contents intact, was converted into a tomb by simply covering it with a conical mound of earth or stones, in order to preserve it from the ravages of wolves and other beasts of prey. Even the row of stones that surrounded the outside of the tent and kept down the skins that covered it from being blown away by the storms of the steppe, was introduced into the structure of the tomb, and continued to surround the base of the funeral mound. He finds traces of this circle of stones in the podium or low wall of masonry which encircled every Etruscan tumulus or outside tomb, and a remarkable example in the mounds of the Horatii and Curiatii on the Appian Way at Rome. This theory, however, it is only fair to state, is disputed by other writers, who assert that there was no intentional imitation of tents in Etruscan tombs; for if this had been the design there would have been a correspondence between the conical outside and the conical interior, and no Etruscan tomb has been found with a bell-shaped chamber. The tent-like tumulus, say they, was but the mere rude mound of earth heaped over the dead in an uncultured age; and the mound would be made higher and larger according to the dignity of the deceased; and the podium or row of stones around its foot was simply the retaining wall necessary to give it stability and shape. The tomb at Veii had a narrow entrance-passage; and we find this a marked feature in all Etruscan tombs, which are approached by a vaulted passage of masonry, varying from twelve to a hundred feet in length. This also, according to Dr. Taylor, was but a survival of the low entrance-passage through which the ancient Siberians crept into their subterranean habitations, and which the modern Laplanders and Esquimaux still construct before their snow-huts and underground dwellings, to serve the purpose of a door in keeping out the wind and maintaining the temperature of the interior.