(_c_) Both consonants may occur at the beginning of the second word. If the vowel is naturally short, the syllable is almost always short, though such scansions as σε̄ κτενω are occasionally found. But if the second word begins with a double consonant or σ followed by another consonant, the syllable is always long. Thus ο̄ ξενος, τῑ ζητεις, ταυτᾱ σκοπουμεν. A vowel, naturally short, when thus lengthened is said to be “lengthened by position.” The following types of syllable are _always_ short:— (i) Those containing a naturally short vowel (ε or ο) not lengthened by position, _e.g._ ε̆κων, ο̆λος. (ii) Final α of the third declension neuter singular (σωμᾰ), third declension accusative singular (ελπιδᾰ, δρασαντᾰ), and all neuters plural (τᾰ, σωματᾰ, τοιαυτᾰ). (iii) Final ι (_e.g._ εστῐ, τῐ), save, of course, when it is part of a diphthong. (iv) The accusative -ας of the third declension (ανδρᾰς, πονουντᾰς). But μουσᾱς (first declension). The quantity in both cases is that of the corresponding nominative. Hiatus is practically unknown. That is, a word ending in a vowel is not to be followed by a word beginning with a vowel, unless one vowel or the other disappears. Almost always it is the first vowel which is thus cut off, the process being called “elision.” In verse one would not write πάντα εἶπε, but πάντ’ εἶπε; not ἔτι εἶναι, but ἔτ’ εἶναι. When the first vowel is long and the second short, the latter is cut off by “prodelision,” a much rarer occurrence. Thus τούτῳ ἀνεῖπε would become τούτῳ ’νεῖπε. Two long vowels, as in καλὴ ἡμέρα, are not used together at all. But the rule as to hiatus does not normally apply at the end of a verse; usually one can end a verse with an unelided vowel and begin the next with a vowel. If in any metrical scheme this liberty is not allowed, it is said that “synapheia[859] prevails.” We are now in a position to discuss the various metres to be found in Greek Tragedy. § II. THE IAMBIC METRE Practically all the dialogue and speeches are written in this metre. The student would do well to grow thoroughly accustomed to reading these aloud with correct quantities before he attempts the others. The iambic line consists of six feet, any one of which may be an iambus. But a “pure” iambic line, one in which every foot is an iambus, as in _Andromache_, v. 241 (see above), is very rare. A speech written solely in such feet would be highly monotonous and far too rapid. Other feet are therefore allowed, under restrictions, to take the place of the iambus. By far the commonest of these is the spondee, which consists of two long syllables (λο̄γχη̄, πᾱντω̄ν). This can occur in the first, third, or fifth places—one, two, or all three. Thus:— – – ⏑– ⏑ – ⏑ – – – ⏑ – _δησαι_ | βιᾳ | φαραγγ|ι προς | _δυσχειμ_|ερῳ (_Prom. Vinctus_, 15). – – ⏑ – – – ⏑ – ⏑ – ⏑ – _ω τεκν_|α Καδμ|_ου του_ | παλαι | vεα | τροφη (_Œd. Tyr._, I).