Declaracioun of the ascensioun of signes.
The excellence of the spere solide, amonges othir noble
conclusiouns, shewith manyfest the diverse ascenciouns of signes
in diverse places, as wel in the right cercle as in the embelif
cercle. These auctours writen that thilke signe is cleped of
right ascensioun with which more part of the cercle equinoxiall
and lasse part of the zodiak ascendith; and thilke signe
ascendith embelif with which lasse part of the equinoxiall and
more part of the zodiak ascendith. Ferther-over, they seyn that
in thilke cuntrey where as the senith of hem that dwellen there
is in the equinoxial lyne, and her orisonte passyng by the two
poles of this world, thilke folk han this right cercle and the
right orisonte; and evermore the arch of the day and the arch of
the night is there ilike longe; and the sonne twies every yer
passing thorugh the cenith of hir heed, and two someres and two
wynters in a yer han these forseide peple. And the almycanteras
in her Astrelabyes ben streight as a lyne, so as shewith in the
figure.
The utilite to knowe the ascensions of signes in the right
cercle is this: Truste wel that by mediacioun of thilke
ascensions these astrologiens, by her tables and her
instrumentes, knowen verreily the ascensioun of every degre
and minute in all the zodiak in the embelif
cercle, as shal be shewed. And
nota--> that this
forseide right orisonte, that is clepid
Orison
Rectum-->, dividith the equinoxial into right angles; and the embelif orisonte, where
as the pool is enhaunced upon the orisonte, overkervith the
equinoxiall in embilif angles, as shewith in the figure.
