Construction of Substantives.

HItherto of Concord or agreement; the other part followeth, which is Governing, where∣by one part of Speech is govern'd by another, that is to say, is put in such Case or Mood as the word that governeth or goeth before in constru∣ction requireth.

When two Substantives come together, beto∣kening divers things, whereof the former may be an Adjective in the Neuter Gender taken for a Substantive; the latter (which also may be a Pronoun) shall be in the Genitive Case; as Facun∣dia Ciceronis. Amator studiorum. Ferimur per opaca locorum. Corruptus vanis rerum. Hor. Desiderium tui. Pater ejus.

Somtimes the former Substantive, as this word Officium or Mos, is understood; as Oratoris est, It is the part of an Oratour. Extremae est dementiae, It is the manner of extream madness. Ignavi est, It is the quality of a sloathful man. Ubi ad Dianae veneris; Templum is understood. Justitiaene prius mirer belline laborum. Virg. Understand Causâ. Ne∣que illi sepositi Ciceris, neque longae invidit avenae. Hor. Supply partem.

But if both the Substantives be spoken of one thing, which is call'd apposition, they shall be Page  45 both of the same case; as P•…ter meus vir, amat me puerum.

Words that signifie Quality, following the Sub∣stantive whereof they are spoken, may be put •…n the Genitive or Ablative Case; as Puer bonae in∣dolis, or bona indole. Some have a Genitive on∣ly; as Ingentis Rex nominis. Liv. Decem annorum puer. Hujusmodi pax. Hujus generis animal. But ge∣nus is sometimes in the Accusative: as Si hoc genus rebus non proficitur. Varr. de re rust. And the cause or manner of a thing in the Ablative only; as Sum tibi natura parens, preceptor consiliis.

Opus and Usus when they signifie Need, require an Ablative; as Opus est mihi tuo judicio. Vigint•… minis usus est filio. But Opus is somtimes taken for an Adjective undeclin'd, and signifieth Needful; as Dux nobis & Author opus est. Alia quae opus sunt para.