Subtilly

[…] one jewel, (as writers make mention,) which was a certain vessel finely and subtilly made of the precious stone onychinus, so radiantly wrought, that in it appeared the lively corn growing, and men's images walking, &c.

He turned their heart to hate his people, to deal subtilly with his servants.

For though Contraria iuxta ſe poſita magis illuceſcunt [opposites placed next to each other shine more brightly] (by an olde Rule) yet it hath beene ſubtilly, and indeede truely noted that our Sight, is not vvell contented, vvith thoſe ſudden departments, from one extreame to another; Therefore let them haue, rather a Duskiſh Tincture, then an abſolute blacke.