Literature of the subjects whose language is studied

The Equatorie of the Planets – A rough translation of a Latin work derived from an Arab work of the identical heading. It is a portrayal of the structure and use of a universal eupatorium, which was used in scheming planetary revolutions and positions (at the time it was supposed the sun orbited the Earth). The similar Treatise on the Astrolabe, not usually doubted as Chaucer's work, in addition to Chaucer's name as a polish to the copy are the main pieces of evidence for the provenance to Chaucer. Although, the suggestion Chaucer wrote such a work is questionable, and as such is not included in The Riverside Chaucer. I t was undoubtedly written by a contemporary, if Chaucer did not comprise this work,.

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  Of the Wreched Engendrynge of Mankynde, conceivable translation of Innocent III's De miseria conditionis humanae
  
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  Origenes upon the Maudeleyne
  
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  The Book of the Leoun – "The Book of the Lion" is mentioned in Chaucer's retraction. It has been speculated that it may have been a redaction of Guillaume de Machaut's 'Dit dou lyon,' a story about courtly love (a subject about which Chaucer frequently wrote).
  
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  Spurious works[edit]
  
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  The Pilgrim's Tale – written in the 16th century with many Chaucerian allusions
  
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  The Plowman's Tale or The Complaint of the Ploughman – a Lollard satire later appropriated as a Protestant text
  
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  Pierce the Ploughman's Crede – a Lollard satire later appropriated by Protestants
  
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  The Ploughman's Tale – its body is largely a version of Thomas Hoccleve's "Item de Beata Virgine"
  
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  "La Belle Dame Sans Merci" – frequently attributed to Chaucer, but actually a translation by Richard Roos of Alain Chartier's poem
  
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  The Testament of Love – actually by Thomas Usk
  
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  Jack Upland – a Lollard satire
  
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  The Floure and the Leafe – a 15th-century allegory
  
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  God Spede the Plough – Borrows twelve stanzas of Chaucer's Monk's Tale