Treatise on The Astrolabe : addressed to his son Lowys / by Geoffrey Chaucer ; edited from the earliest MSS. by Walter W. Skeat
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Title
Treatise on The Astrolabe : addressed to his son Lowys / by Geoffrey Chaucer ; edited from the earliest MSS. by Walter W. Skeat
Author
Chaucer, Geoffrey, d. 1400
Editor
Skeat, Walter W. (Walter William), 1835-1912
Publication
London: N. Trübner & Co.
1872
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"Treatise on The Astrolabe : addressed to his son Lowys / by Geoffrey Chaucer ; edited from the earliest MSS. by Walter W. Skeat." In the digital collection Corpus of Middle English Prose and Verse. https://name.umdl.umich.edu/ChaucerAstr. University of Michigan Library Digital Collections. Accessed June 2, 2024.
Pages
[folio 24b]
37. A-nother manere of equaciouns of howses by the Astrelabie.
[De aliqua forma equacionis domorum secundum astrolabium.]
¶ Tak thin assendent, & thanne hastow thi 4 Angles; for wel
thow wost þat the opposit of thin assendent, þat is to seyn, thy
by-gynnyng of the 7 howis, sit vp-on the west orizonte ; ¶ & the
bygynnyng of the 10 howis sit vp-on the lyne Meridional ; ¶ & his
opposit vp- on the lyne of Mydnyht. ¶ Thanne ley thi label ouer
descriptionPage 46
the degree þat assendet[h] / & rekne fro the point of thy label alle
the degrees in the bordure, til thow come to the Meridional lyne / &
departe alle thilke degrees in 3 euene parties, & take the euene
equacion of 3 ; for ley thy label ouer euerich of 3 parties, & [than]
maistow se by thy label in which degree of the zodiak [is] the by-
gynnyng of euerich of thise same howses fro the assendent / þat is to
seyn, the begynyng of the [12] howse nex[t] aboue thin assendent /
And [thanne] the begynnyng of the 11 howse, & thanne the 10 vp-on the Meridional lyne / as I first seide. ¶ The same wyse wyrke
thow fro the assendent down to the lyne of Mydnyht / & thanne
thus hastow other 3 howses, þat is to seyn, the bygynnyng of the 2
& the 3 And the 4 howses ; thanne is [the] nader of thise 3 howsez
the by-gynnyng of the 3 howses þat folwen. ¶ & for the more
declaracioun, lo here thi figure.
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