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

55

hir cours houre by houre; for she ne dwelleth nat in a degree of

hir longitude but a litel whyle, as thou wel knowest; but natheles,

yif thou rekne hir verreye moeving by thy tables houre after houre,

[thou shall do wel y-now].

Explicit tractatus de Conclusionibus Astrolabii, compilatus per Galfridum Chauciers ad Filium suum Lodewicum, scolarem tunc temporis Oxonie, ac sub tutela illius nobilissimi philosophi Magistri N. Strode, etc.

SUPPLEMENTARY PROPOSITIONS.

[41.] Umbra Recta.

Yif it so be that thou wilt werke by umbra recta, and thou may

come to the bas of the toure, in this maner thou schalt werke.