§ 16. That They be confin'd to a Group of a few Notes, which are more pleasing than those which are too numerous.
§ 17. That in a slow Time, there may be a greater Number of them (if the Bass allows it) with an Obligation upon the Singer to keep to the Point propos'd, that his Capacity be made more conspicuous.
§ 18. That They be properly introduc'd, for in a wrong Place They disgust.
§ 19. That They come not too close together, in order to keep them distinct.
§ 20. That They should proceed rather from the Heart than from the Voice, in order to make their way to the Heart more easily.
§ 21. That They be not made on the second or fourth Vowel, when closely pronounc'd, and much less on the third and fifth.
§ 22. That They be not copied, if you would not have them appear defective.
§ 23. That They be stol'n on the Time, to captivate the Soul.
§ 24. That They never be repeated in the same place, particularly in Pathetick Airs, for there they are the most taken Notice of by the Judicious.
§ 25. And, above all, let them be improv'd; by no means let them lose in the Repetition.