y Interval in
the Scale perfectly and readily, and keep him strictly to this important
Lesson, if he is desirous he should sing with Readiness in a short time.

Sec. 17. If the Master does not understand Composition, let him provide
himself with good Examples of _Sol-Fa_-ing in divers Stiles, which
insensibly lead from the most easy to the more difficult, according as
he finds the Scholar improves; with this Caution, that however
difficult, they may be always natural and agreeable, to induce the
Scholar to study with Pleasure.

Sec. 18. Let the Master attend with great Care to the Voice of the Scholar,
which, whether it be _di Petto_, or _di Testa_, should always come forth
neat and clear, without passing thro' the Nose, or being choaked in the
Throat; which are two the most horrible Defects in a Singer, and past
all Remedy if once grown into a Habit[11].

Sec. 19. The little Experience of some that teach to _Sol-fa_, obliges the
Scholar to hold out the _Semibreves_ with Force on the highest Notes;
the Consequence of which is, that the Glands of the Throat become daily
more and more inflamed, and if the Scholar loses not his Health, he
loses the treble Voice.

Sec. 20. Many Masters put their Scholars to sing the _Contr'Alto_, not
knowing how to help them to the _Falsetto_, or to avoid the Trouble of
finding it.

Sec. 21. A diligent Master, knowing that a _Soprano_, without the
_Falsetto_, is constrained to sing within the narrow Compass of a few
Notes, ought not only to endeavour to help him to it, but also to leave
no Means untried, so to unite the feigned and the natural Voice, that
they may not be distinguished; for if they do not perfectly unite, the
Voice will be of divers[12] Registers, and must consequently lose its
Beauty. The Extent of the full natural Voice terminates generally upon
the fourth Space, which is _C_; or on the fifth Line, which is _D_; and
there the feigned Voice becomes of Use, as well in going up to the high
Notes, as returning to the natural Voice; the Difficulty consists in
uniting them. Let the Master therefore consider of what Moment the
Correction of this Defect is, which ruins the Scholar if he overlooks
it. Among the Women, one hears sometimes a _Soprano_ entirely _di
Petto_, but among the Male Sex it would be a great Rarity, should they
preserve it after having past the age of Puberty. Whoever would be
curious to discover the feigned Voice of one who has the Art to disguise
it, le