§ 17. The Necessity of the Shake obliges the Master to keep the Scholar applied to it upon all the Vowels, and on all the Notes he possesses; not only on Minims or long Notes, but likewise on Crotchets, where in Process of Time he may learn the Close Shake, the Beat, and the Forming them with Quickness in the Midst of the Volubility of Graces and Divisions.
§ 18. After the free Use of the Shake, let the Master observe if the Scholar has the same Facility in disusing it; for he would not be the first that could not leave it off at Pleasure.
§ 19. But the teaching where the Shake is convenient, besides those on[41] Cadences, and where they are improper and forbid, is a Lesson reserv'd for those who have Practice, Taste, and Knowledge.
CHAP. IV.
On Divisions.
ho' Divisions have not Power sufficient to touch the Soul, but the most they can do is to raise our Admiration of the Singer for the happy Flexibility of his Voice; it is, however, of very great Moment, that the Master instruct the Scholar in them, that he may be Master of them with an easy Velocity and true Intonation; for when they are well executed in their proper Place, they deserve Applause, and make a Singer more universal; that is to say, capable to sing in any Stile.