[504] _A half score steps, etc._: Traversing the stone-built border which lies between the sand and the precipice. Had the brook flowed to the very edge of the Seventh Circle before tumbling down the rocky wall it is clear that they might have kept to the embankment until they were clear beyond the edge of the sand. We are therefore to figure to ourselves the water as plunging down at a point some yards, perhaps the width of the border, short of the true limit of the circle; and this is a touch of local truth, since waterfalls in time always wear out a funnel for themselves by eating back the precipice down which they tumble. It was into this funnel that Virgil flung the cord, and up it that Geryon was seen to ascend, as if by following up the course of the water he would find out who had made the signal. To keep to the narrow causeway where it ran on by the edge of this gulf would seem too full of risk. [505] _Woful folk_: Usurers; those guilty of the unnatural sin of contemning the legitimate modes of human industry. They sit huddled up on the sand, close to its bound of solid masonry, from which Dante looks down on them. But that the usurers are not found only at the edge of the plain is evident from _Inf._ xiv. 19. [506] _Could recognise, etc._: Though most of the group prove to be from Florence Dante recognises none of them; and this denotes that nothing so surely creates a second nature in a man, in a bad sense, as setting the heart on money. So in the Fourth Circle those who, being unable to spend moderately, are always thinking of how to keep or get money are represented as 'obscured from any recognition' (_Inf._ vii. 44). [507] _A pregnant sow_: The azure lion on a golden field was the arms of the Gianfigliazzi, eminent usurers of Florence; the white goose on a red ground was the arms of the Ubriachi of Florence; the azure sow, of the Scrovegni of Padua. [508] _Vitalian_: A rich Paduan noble, whose palace was near that of the Scrovegni. [509] _Pink of Chivalry_: 'Sovereign Cavalier;' identified by his arms as Ser Giovanni Buiamonte, still alive in Florence in 1301, and if we are to judge from the text, the greatest usurer of all. A northern poet of the time would have sought his usurers in the Jewry of some town he knew, but Dante finds his among the nobles of Padua and Florence. He ironically represents them as wearing purses ornamented with their coats of arms, perhaps to hint that they pursued their dishonourable trade under shelter of their noble names--their shop signs, as it were. The whole passage may have been planned by Dante so as to afford him the opportunity of damning the still living Buiamonte without mentioning his name. [510] _His tongue thrust out_: As if to say: We know well what sort of fine gentleman Buiamonte is.