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

practik of the forseide conclusiouns, as ferforth and as narwe

as may be shewed in so smal an instrument portatif aboute.

For wel wot every astrologien that smalest fraccions ne wol

nat ben shewed in so smal an instrument, as in subtil tables

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calculed for a cause.

III. The thridde partie shal contienen diverse tables of

longitudes and latitudes of sterres fixe for the Astrolabie, and

tables of declinacions of the sonne, and tables of longitudes

of citeez and of townes; and as wel for the governance of a