LESSON XXV


[Illustration: Fig. 137.]


EXERCISES

To cantus firmus _a_ write second species in one part as previously
directed.

To cantus firmus _b_ write the first and second species mixed in the other
three parts. [Fig. 137_a_.]

To cantus firmus _c_ write third species in one part, as directed for the
second species (_b_).


CANTI FIRMI

[Illustration: Fig. 138.]




LESSON XXVI


[Illustration: Fig. 139.]