Chaucer's Works, Volume 3 — The House of Fame; The Legend of Good Women; The Treatise on the Astrolabe; The Sources of the Canterbury Tales

by Geoffrey Chaucer

[chapitre bi-forn], and adde hem to the arch of thy day artificial;

and tak ther the space of alle the hole day vulgar, un-to verrey

night. The [same manere] maystow worke, to knowe the quantitee

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of the vulgar night. And for the more declaracioun, lo here the

figure.

[10.] To knowe the quantite of houres in-equales by day.

[Ad cognoscendum horas inequales in die.]

Understond wel, that thise houres in-equales ben cleped houres

of planetes, and understond wel that som-tyme ben they lengere