23. quae cum ita essent, 'and this being the case,' 'and so,' literally 'since which things were so.'
24. líberátus. See the note on írá … interfécit, 18, 4.
25. quae, object of perscríbere, which is the subject of est; longum is predicate adjective.
26. est. We say 'would be.'
aetáte, ablative of specification. Translate 'when he was now advanced in age' (i.e. 'late in life'), and see the note on fessus, 23, 15.
30. 1. accidit. This is one of several impersonal verbs which take for their subject a clause of result (ut … occíderit).
3. ut … íret, a clause of result; used as the subject of esset, mós being predicate.
quis. After sí, nisi, né, and num, this is not the interrogative, but an indefinite pronoun ('any one'),
occídisset, indirect for occíderit, which would be the form used in the laws; or it may be explained as subjunctive by attraction to íret.
7. tránseant, not 'they are crossing,' but 'they are to cross.' The direct form would be _tránseámus ('How in the world are we to get across?'), subjunctive because the question expresses doubt. This is called the deliberative subjunctive.