De Agricultura
Philo Judaeus
The works of Philo Judaeus, the contemporary of Josephus, volume 1. Yonge, C. D., translator. London: Henry G. Bohn, 1854.
Do not musicians again divide their own science into rhythm, and part, and melody? and subdivide melody into the chromatic, the enharmonic, and the diatonic species, into the divisions of fourths, and fifths, and the diapason, and into combined and distinct melodies?