The Greek and Latin authors who have stated of peoples living in Britain many characteristics which do not belong to civilisation or even to the borders of civilisation, range from Pytheas the Greek in the middle of the fourth century before our era down to the Latin poets of the early fifth century anno Domini. They all refer to the British savage. He is cannibalistic, incestuous, naked, possesses his wives in common, lives on wild fruits and not cultivated cereals, indulges in head-hunting, has no settled living-place which can be called a house, and generally betrays the characteristics of pure savagery.[162] Altogether there is a fairly substantial range of material for the formation of a reasonable conception of the condition of savagery in Britain. [Illustration: ROMAN SCULPTURED STONE FOUND AT ARNIEBOG, CUMBERNAULD, DUMBARTONSHIRE, SHOWING A NAKED BRITON AS A CAPTIVE] We need not dwell long upon the earlier of our historians who have neglected or contested the statements of the authorities they use. They hardly possessed the material for scientific treatment, and personal predilections were the governing factors of any opinion which is expressed. John Milton, in his brave attempt to tell the story of early England, does not so much as allude to these disagreeable points. Hume disdainfully passes by the whole subject and practically begins with the Norman conquest. Lappenberg says of the group marriage of the Britons that it "is probably a mere Roman fable."[163] Innes accepts the views of the classical authorities and argues from them in his own peculiar way,[164] but Sullivan will have it that the materials afforded from classical sources are worthless: "they consist of mere hearsay reports without any sure foundation, and in many cases not in harmony with the results of modern linguistic and archæological investigations."[165] Neither Turner nor Palgrave has any doubt as to the authority of these early accounts,[166] and Dr. Giles accepts the accounts which he so usefully collected from the original authorities.[167]