Endnote 26
Part I, §21, l. 12. Aldeberan, &c.; the
stars Aldebaran (a Tauri) and Algomeisa (a Canis Minoris)
are called stars of the south, because they are to the south of the ecliptic;
but as they are meanwhile (see Fig. 2) also to the north of the equator,
they of course rise to the N. of the Eastern point of the horizon.
The longitude of stars was always measured along the ecliptic, which is
denoted in Fig. 2 by the outermost circle of the metal ring on which the
names of the signs are written.
In one of the tracts in MS. G (dated A.D. 1486), p. 30, we find `Aldebaran,
in the first gre of geminis (sic), of the nature of Mars
and Venus'; and `Algomeisa, canis minor, in the xvij gre of Cancer,
of the nature of Mars and Mercury'.