Eustathius tells us in the passage already discussed[98], that the kerykeion was also called πομπός, conductor, and that it was carried in the hands of those who performed ceremonies of purification. He is trying, it will be remembered, to derive the words διοπομπεῖν and ἀποδιοπομπεῖν. When an ancient author is trying to derive words, we are bound to accept his statements only with the utmost caution; still in this particular instance there seems no reason for suspecting the statement that the kerykeion was called πομπός; it is dragged in quite gratuitously, and does not help out the proposed derivation. What Eustathius says is this: ‘At the end of the month Maimakterion they perform ceremonies of sending, among which was the carrying of the magic fleece, and there take place then throwings out of purifications at the crossways, and they hold in their hands the _pompos_ (i.e. conductor), the which they say is the kerykeion, the attribute of Hermes.’ The object of the whole ceremony is ‘to send out polluted things.’ It is, I think, significant that the kerykeion, or rather to be strictly accurate the rhabdos[99], was carried in apotropaic ceremonies, presumably with a view to exorcise bad spirits, which as will appear later were regarded as the source of all impurities. It is the other face of revocation; the rhabdos is used either for the raising or the laying of ghosts, for the induction (ἐπαγωγή) of good spirits, for the exorcism (ἀποτροπή) of bad. In discussing the Anthesteria on a previous occasion[100], I felt confident that in the opening of the grave-jars we had the complete solution of the difficulty of the unlucky character of the day Pithoigia. It seems to me now in the light of further investigation that another ritual element may have gone to its determination.