I come now to Stephen, who, in his index, and in the word ποδίζω, gives the derivation of _Empusa_. Ποδιζω, _gradior, incedo_, (not to hop) _sic Suidas_ Ἔμπουσαν _dictam ait_ παρὰ το ἑνὶ ποδιζειν. In the index thus: _sunt qui dictam putent_ παρὰ τὸ ἑνὶ ποδὶζειν, _quod uno incedat pedi, quasi_ Ἔμπουσαν, _alterum enim pedem æneum habet_. But neither Stephen, nor any else, except _Suidas_, whom the hypercritical Doctor had not seen, no, not the Scholiast of Aristophanes (a better critic than Mr. Hobbes) doth relate the etymology as their own. Nay, there is not one that saith _Empusa_ hopped on one leg, which is to be proved out of them. The great Etymological Dictionary deriveth it παρὰ τὸ ἐμποδιζειν, to _hinder_, _let_, &c. its apparition being a token of ill luck. But, as to the Doctor’s deduction, it saith, Ἔμπουσα Ψιλοῦπαι, εἰ καὶ δοκεῖ παρὰ τὸ ἕνα συγκεῖσθαι. It doth only _seem_ so. And it is strange that ἑν should not alter only its _aspiration_, but change its ν into μ, which I can hardly believe admittable in Greek, least there should be no difference betwixt its derivatives and those of ἐν. When I consider the several μορμόνες which the Grecians had, some whereof did fly, some had no legs, &c., I can think that the origin of this name may have been thus: some amazed person saw a _spectrum_, and, giving another notice of it, his companion might answer, it is Βριμὼ, Μορμὼ Ἡκὰτη, but he, meeting with a new phantasm, cries, ἐν ποσὶ βαίνει or βαδίζει, for which apprehension of his, somebody coined this expression of Ἔμποῦσα. It may also be possibly deduced from Ἐμποδὶζω, so that τύχη ἐμποδιζουσα might afterwards be reduced to the single term of _Empusa_. Nor do I much doubt but that those who are conversant in languages, and know how that several expressions are often jumbled together to make up one word upon such like cases, will think this a probable origination. I believe, then, that Mr. Hobbes’s friend did never tell him it was in Eustathius, or that _Empusa_ was an _hopping phantasm_. It had two legs and went upon both, as a man may upon a wooden leg. Ἔμποῦσα is also a name for Lamia, and such was that which Menippus might have married, which, I suppose, did neither hop nor go upon one leg, for he might have discovered it. But Mr. Hobbes did not except against the derivation, (although he might justly, derivations made afterwards carrying more of fancy than of truth, and the Doctor is not excused for asserting what others barely relate, none approve), but asked him where that is, in what authors _he read that boys’ play to be so called_. To which question, the Doctor, to show his reading and the good authors he is conversant in, replies, _in Junius’s Nomenclator, Rider and Thomas’s Dictionary, sufficient authors in such a business_, which, methinks, no man should say that were near to so copious a library. It is to be remembered that the trial now is in Westminster School, and amongst