It will be evident that under this rule the perfect and first aorist subjunctive should always take a short vowel; and this accordingly is the case, with very few exceptions.
Of the imperfect (canidbamos, canidbais), of the pluperfect indicative (cantdramos, cantdrais), and of the imperfect subjunctive (cantdsemos, cantdseis); possibly the impulse to this was given by the forms of future perfect canidremos, cantdreis (cantarlrnus, caniarilis).
The infinitive is not found; as in Greek, Rumanian and Bulgarian, it is replaced by the subjunctive with a particle.
Thomas, entitled A catalogue raisonne of the Subjunctive in Plautus, in support of the theory of the unity of origin of the Latin Subjunctive, is announced as in preparation.
In the present indicative and subjunctive many verbs in it takethe inchoative form already described, by lengthening the radical in the three persons of the singular and in the third person of the plural by means of the syllable esc (isc).
Agrohir has the present indicative agraesch, agraheixes, agraheix, agraheixen, the present subjunctive agraesca, -as, -a, -an (or more usually now agraesqui, -is, -i, -in).
The most recent works bearing on Old Latin syntax, are Sjogren, Zum Gebrauch des Futurums im Altlateinischen (1906); Lindsay, Syntax of Plautus (1907); Sonnenschein, The Unity of the Latin Subjunctive (1910).