EXERCISES

To cantus firmus a write the fourth species in one part, as usual.

To cantus firmus b write first, second and fourth species in the other three parts. [[Fig. 143a].]

To cantus firmus c write the first, third and fourth species in the other three parts. [[Fig. 143b].]

To cantus firmus c write fourth species mixed in the other parts. [[Fig. 143c].]