2 adjectives to describe subsidiaries

The plays which appeal to us in virtue of their pleasant departures from probability are romances, farces, a certain order of light comedies and semi-comic melodramasin short, the thousand and one plays in which the author, without altogether despising and abjuring truth, makes it on principle subsidiary to delightfulness.

The attention of the pupil should be confined as much as possible to the most classical writers; and the French would furnish a most useful subsidiary in a course of history.

2 adjectives to describe  subsidiaries