Use "discriminative" in a sentence

1. But when the discriminative mind comes into being and

2. We must have faith in the judgments "of the finest-nurtured and most discriminative" men

3. cupreus is, notwithstanding the above observations, considered a distinct species, it would gratify those who cultivate natural history, to have some good discriminative characters of it

4. The single character of the subocellate spots, though not remarked by this author, is a sufficiently discriminative one; these ocellæ are always present, and in no one of the varieties I have seen has the approximation to the subviolacea been so considerable as to render a specific discrepance equivocal