Sources
Appendix I.18. [Contrappunti] Basso n. 5

Appendix I.18.B.1

Full score. Fascicle of 3 double leaves, oblong format, 16 staves, containing a series of three-part contrapuntal exercises for a total of 8 pages of music; pp. 1-2 and 11-12 are blank.
On pp. 4–10, five contrapuntal exercises: pp. 4-5, “N. 5 consonanze,” 58 bars; pp. 6-7, “Lo stesso per dissonanze,” 58 bars; pp. 7-9, “Lo stesso nella parte media,” 58 bars; pp. 9-10, “Lo stesso parte acuta,” 58 bars, bars 55–58 incomplete; p. 10, “Lo stesso Imitazioni,” 9 bars, lacking the continuation.
Preceded by Appendix I.16 on p. 3 and by Appendix I.17 on pp. 3-4.