a.  This peculiarity is confined to the Active Voice.  In the Passive, such
  sentences, when they become dependent, remain unchanged; as,—­

    non dubito quin, si hoc dixisses, vituperatus esses, I do not doubt
    that, if you had said this, you would have been blamed.

  b.  When an Indirect Question becomes an apodosis in a conditional
  sentence of the Third Type, -urus fuerim (rarely -urus fuissem) is used;
  as,—­

    quaero, num, si hoc dixisses, erraturus fueris (or fuisses).

  c.  Potui, when it becomes a dependent apodosis in sentences of this Type,
  usually changes to the Perfect Subjunctive; as,—­

concursu totius civitatis defensi sunt, ut frigidissimos quoque oratores populi studia excitare potuerint, they were defended before a gathering of all the citizens, so that the interest of the people would have been enough to excite even the most apathetic orators.

IMPLIED INDIRECT DISCOURSE.

323.  The Subjunctive is often used in subordinate clauses whose indirect character is merely implied by the context; as,—­

demonstrabantur mihi praeterea, quae Socrates de immortalitate animorum disseruisset, there were explained to me besides, the arguments which Socrates had set forth concerning the immortality of the soul (i.e. the arguments which, it was said, Socrates had set forth);

    Paetus omnes libros quos pater suus reliquisset mihi donavit, Paetus
    gave me all the books which (as he said) his father had left.

SUBJUNCTIVE BY ATTRACTION.

324. 1.  Subordinate clauses dependent upon the Subjunctive are frequently attracted into the same mood especially when they do not express a fact, but constitute an essential part of one complex idea; as,—­

    nemo avarus adhuc inventus est, cui, quod haberet, esset satis, no
    miser has yet been found who was satisfed with what he had;

    cum diversas causas afferrent, dum formam sui quisque et animi et
    ingenii redderent, as they brought forward different arguments, while
    each mirrored his own individual type of mind and natural bent;

    quod ego fatear, pudeat? should I be ashamed of a thing which I
    admit?

2.  Similarly a subordinate clause dependent upon an Infinitive is put in the Subjunctive when the two form one closely united whole; as,—­

mos est Athenis quotannis in contione laudari eos qui sint in proeliis interfecti, it is the custom at Athens every year for those to be publicly eulogized who have been killed in battle. (Here the notion of ‘praising those who fell in battle’ forms an inseparable whole.)

NOUN AND ADJECTIVE FORMS OF THE VERB.

325.  These are the Infinitive, Participle, Gerund, and Supine.  All of these partake of the nature of the Verb, on the one hand, and of the Noun or Adjective, on the other.  Thus:—­