It seems he had derived _Empusa_ from ἓν and ποῦς, and said it was a kind of _Hobgoblin_ that hopped upon one leg: and hence it was that the boys’ play (_Fox come out of thy hole_) came to be called _Empusa_. I suppose he means _Ludus Empusæ_. This derivation he would have to be good, and that we may know his reading, (though he hath scarce consulted any of the authors), he saith Mr. Hobbes did laugh at it, until somebody told him that it was in the Scholiast of Aristophanes (as good a critic as Mr. Hobbes), Eustathius, Erasmus, Cœlius Rhodiginus, Stephanus, Scapula, and Calepine. But sure he doth not think to scape so. To begin with the last; Calepine doth indeed say, _uno incedit pede, unde et nomen_. But he is a _Modern_, and I do not see why his authority should outweigh mine if his author’s reasons do not. He refers to Erasmus and Rhodiginus. Erasmus in the adage, _Proteo mutabilior_ hath these words of Empusa: _Narrant autem uno videri pedi_--this is not to hop--_unde et nomen inditum putant_, Ἔμπουσαν ὁιονεὶ ἑνίποδα. He doth not testify his approbation of the derivation at all, only lets you know what etymologies some have given before him. And doth anybody think that Dr. Harmar was the first which began to show his wit, (or folly), in etymologizing words? Cœlius Rhodiginus doth not own the derivation, only saith, _Nominis ratio est, ut placet Eustathio, quia uno incedit pede_;--is this to hop?--_sed nec desunt qui alterum interpretentur habere æneum pedem, et inde appellatam Empusam; quod in Batrachis Aristophanes expressit_. And then he recites the interpretation that Aristophanes’s Scholiast doth give upon the text, of which by and by. If any credit be to be attributed to this allegation, his last thoughts are opposite to Dr. Wallis; and _Empusa_ must be so called, not because she hopped upon one leg, but because she had but one, the other being brass. But for the former derivation he refers to Eustathius. As to Eustathius, I do easily conjecture that the reader doth believe that Rhodiginus doth mean Eustathius upon Homer, for that is the book of most repute and fame, his other piece being no way considerable for bulk or repute. But it is not that book, nor yet his History of Ismenias, but his notes upon the 725th verse of Dionysius Περῖηγητής. The poet had said of the stone _Jaspis_, that it was Ἐχθρηὶν Ἐμπούσησι καὶ ἄλλοις ἔιδώλοισιν,