Descartes, René, 1596-1650 · London : Printed by T. Harper, for Humphrey Moseley, and are to bee sold at his shop at the signe of the Princes Armes in S. Pauls Church-Yard, and by Thomas Heath in Coven Garden · leaf 77
cident : and asa way , by which wee may come from a Firft Note toa Third , with which that Firft Note ought to make a Confonance , as alfo doth the Note of the oppofite part, But, if that Second Note incede per Salim, 1. e. bee diftant by the intervall of one Confonance from the Firft; then ought…
Music theory · Music -- Acoustics and physics
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.