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

and his declinacion is almost 20 degrees northward fro the

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equinoxial; abate thanne thilke 20 degrees of declinacion out of

the altitude at noon, than leveth thee 38 degrees and odde minutes;

lo ther the heved of Aries or Libra, and thyn equinoxial in that

regioun. Also yif so be that the sonnes declinacioun be southward

fro the equinoxial, adde thanne thilke declinacion to the

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altitude of the sonne at noon; and tak ther the hevedes of Aries

and Libra, and thyn equinoxial. Abate thanne the heyghte of