tyme in the bordure by-twixe bothe prikkes, and tak ther thyn ark
of the day. The remenant of the bordure under the orisonte is
the ark of the night. Thus maistow rekne bothe arches, or
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every porcion, of whether that thee lyketh. And by this manere
of wyrking maistow see how longe that any sterre fix dwelleth above
the erthe, fro tyme that he ryseth til he go to reste. But
the day natural, that is to seyn 24 houres, is the revolucioun of
the equinoxial with as moche partie of the zodiak as the sonne
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