It is not, I think, pressing his language too far, if we regard him as stating these four criteria in what he regarded as the order of their relative importance. First, for scientific as for political purposes, comes community of descent; next, community of language; then community of religion; and general community of observance, in daily life, only at the end of all. Contrast with this the method of inquiry in the _Supplices_, where, as we saw, dress and equipment come first, then religious observance, then language; and physique is postponed to all three. That this is not accidental will be seen, I think, from an example of the Herodotean anthropology when applied, so to speak, ‘in the field,’ to the description of the northern Argippaei where each successive criterion is introduced by δὲ which is adversative to the preceding clause.[95] Here the physical anthropology is given first; then the language, which distinguishes these Argippaei from _all_ other men, and so forms a cross division athwart the criterion of physique; then, _though_ they have a language of their own, yet, till they speak to you, you would not think it, for their dress is Scythian; but after all, Scythians they cannot be, because no Scythian lives on tree-fruit. He is a pastoral nomad, or at best an ἀροτὴρ ἐπὶ πρήσι. Here ἤθεα ὁμότροπα hold the last and lowest place; and the cause of this is plain: for their witness agrees not together. There is a reason for this new emphasis on community of blood and of language in the anthropology of Herodotus. If the Persian War had shown nothing else, it had shown the superior efficiency of an army which was mutually intelligible, over one which might have met, not in Kritalla, but in Shinar; and even more forcibly it had impressed the belief, that what mattered was not equipment, nor language, but breed. It was the Persians who could survey and mark a sea channel like a modern Admiralty,[96] and amazed their captive by those unfamiliar drugs and ‘shield-straps made of silky linen’ which we call surgical bandages;[97] but it was their prisoner Pytheus who amazed them by the physique and the training which brought him through, when he was literally ‘mangled to butcher’s meat’. And there is another reason for this emphasis. Right in sight of Halicarnassus, and hardly two hours’ sail, lies the town of Cos, and in its _agora_ to-day stands the great plane-tree of Hippocrates; and during the lifetime of Herodotus there was growing up there that latest and fairest flower of pre-Socratic knowledge, the Coan medical school, with an anatomy, a physiology, and an anthropology of its own, superior by far to anything which succeeded it until the seventeenth century. In what relation the professional science of Hippocrates stood to the penumbral knowledge of Herodotus, and also to the learning and speculations of their predecessors, may be illustrated from their respective treatment of the phenomenon of beardlessness in Man.