In one passage he distinctly says the old organ high pitch had been a whole tone above his Cammerton, with which we shall find his tertia minore combines to make the required interval.
The term tertia minore, or inferiore, is used by Praetorius to describe a low pitch, often preferred in England and the Netherlands, in Italy and in some parts of Germany.
An organist, instead of transposing a whole ton g down from the Cammerton, would for the tertia minore have to transpose a minor third.
To return to the tertia minore.
Harpsichords had long been preferred at the tertia minore.
1789 Praetorius "Tertia minore" 1618 St Michael's, Hamburg..
1783 St Jacobi, Hamburg, "Tertia minore" stop..1688-1693Hofcapelle, Dresden.
3 Ethices, Pars tertia, Praefatio.
Coepi igitur, ejus hortatu, rejectis illis quos antea paraveram, de horum calculo serio cogitare; et sequenti aestate iterum profectus Edinburgum, horum quos hic exhibeo praecipuos, illi ostendi, idem etiam tertia aestate libentissime facturus, si Deus ilium nobis tamdiu superstitem esse voluisset."
The title Elementorum philosophise sectio tertia, De dive, expresses its relation to the unwritten sections, which also comes out in one or two back-references in the text.
In his commentary on the De Interpretatione, St Thomas, after citing from the De Anima Aristotle's " duplex operatio intellectus," said, " Additur autem et tertia operatio, scilicet ratiocinandi," and concluded that, since logic is a rational science (rationalis scientia), its consideration must be directed to all these operations of reason.