SUMMARY

must ascend and descend, and what sequence of sounds and consonances one must use to make the effect that one desires; and if the chants of the Church can be perfected; how children can be instructed in the sciences and in good morals by Music, and what profit or detriment it can bring to Kingdoms and to Republics.

The Twelfth declares the Utilities that Philosophers, Theologians, Orators, Preachers, Advocates, and others who speak in public can draw from Music, and to what use sounds can be put in Mechanics and in war.

The Thirteenth shows if Astrologers can predict something by the knowledge of the harmony that is made by the movements, the encounters, and the aspects of the Stars and of the Planets.

The Fourteenth determines if one can explain all natural things, and Morality and Theology by sounds and by harmony; and shows that the whole world is an instrument of Music which is played and conserved by divine providence, and that men cannot justly complain of the effects that happen in nature. We will also explain the sound or the noise of thunder, of winds, of...