There then follows two greatly augmented versions of the theme in dotted minims: first on the organ pedals (bar 30) and then in bar 32 in the trumpet.
The latter is a plausible position for an adherent of minim equivalence to take, and the 'notarum equivocarum' of lines 22-3 are undoubtedly minims.
Since this is a cadential situation, and since the offending note is only a minim, it may be that the latter solution was foreseen.
Each entry follows the previous one by one full bar (three minims).
Using the common reduction of note-values to one eighth, we nay say that the perfect long equals a dotted minim in a 3/4 measure.
Perhaps the notational minims are as the uniform grains of wheat held in a sieve.
Another possible error is for a lazy 'v' to be improperly connected at the bottom, thereby appearing to the scribe as two minims, or 'ii'.
Or we could imagine the four mensurations as four different sets of chain lines pressed into the neutral medium of successive minim durations.
