LESSON II

SECOND SPECIES


[Illustration: Fig. 17.]

All rules for the first species must be observed.

Two notes are written in the counterpoint to one of the cantus firmus,
except in the last measure. [Fig. 18_a_.] In the last measure but one the
first species may sometimes be used. [Fig. 18_b_.]

[Illustration: Fig. 18.]

Repetition of a note in any but the first species is forbidden. [Fig. 19.]

[Illustration: Fig. 19.]

The counterpoint may begin on the first or the second half of the measure,
preference being given to the second half. When it begins on the first half
it must be a unison, fifth, or octave; when on the second half, it may be
any consonance. [Fig. 20.]

[Illustration: Fig. 20.]

After the first measure the interval on the first beat should be an