Solis equi lucis dicuntur quatuor horæ,
Hæc rubet, hæc splendet, hæc calet, illa tepet.
Indéed our physicians haue another partition of the daie, as men of no lesse learning no doubt than the best of forren countries, if we could so conceiue of them. And herein they concurre also with those of other nations, who for distinction in regiment of our humors, diuide the artificiall daie and night in such wise as these verses doo import, and are indéed a generall rule which ech of them doth follow:
Tres lucis primas, noctis tres sanguinis imas,
Vis choleræ medias lucis sex vendicat horas.
Dátque melam primas noctis, tres lucis & imas,
Centrales ponas sex noctis phlegmatis horas.
Or thus, as Tansteter hath giuen them foorth in his prelections:
A nona noctis donec sit tertia lucis,
Est dominus sanguis, sex inde sequentibus horis