In the back of _Aries_ is a Star of the sixth magnitude, marked ν by _Bayer_: in the end of the year 1689, and beginning of the year 1690, its Longitude was [Taurus]. 9°. 38'. 45", and North Latitude 6°. 7'. 56": and the _Colurus Æquinoctiorum_ drawn though it, according to _Eudoxus_, cuts the Ecliptic in [Taurus]. 6°. 58'. 57". In the head of _Cetus_ are two Stars of the fourth Magnitude, called ν and ξ by _Bayer_: in the end of the year 1689 their Longitudes were [Taurus]. 4°. 3'. 9". and [Taurus]. 3°. 7'. 37", and their South Latitudes 9°. 12'. 26". and 5°. 53'. 7"; and the _Colurus Æquinoctiorum_ passing in the mid way between them, cuts the Ecliptic in [Taurus]. 6°. 58'. 51". In the extreme flexure of _Eridanus_, rightly delineated, is a Star of the fourth Magnitude, of late referred to the breast of _Cetus_, and called ρ by _Bayer_; it is the only Star in _Eridanus_ through which this _Colure_ can pass; its Longitude, in the end of the year 1689, was [Aries]. 25°. 22'. 10". and South Latitude 25°. 15'. 50". and the _Colurus Æquinoctiorum_ passing through it, cuts the Ecliptic in [Taurus]. 7°. 12'. 40". In the head of _Perseus_, rightly delineated, is a Star of the fourth Magnitude, called τ by _Bayer_; the Longitude of this Star, in the end of the year 1689, was [Taurus]. 23°. 25'. 30", and North Latitude 34°. 20'. 12": and the _Colurus Æquinoctiorum_ passing through it, cuts the Ecliptic in [Taurus]. 6°. 18'. 57". In the right hand of _Perseus_, rightly delineated, is a Star of the fourth Magnitude, called η by _Bayer_; its Longitude in the end of the year 1689, was [Taurus]. 24°. 25'. 27", and North Latitude 37°. 26'. 50": and the _Colurus Æquinoctiorum_ passing through it cuts the Ecliptic in [Taurus]. 4°. 56'. 40": and the fifth part of the summ of the places in which these five _Colures_ cut the Ecliptic, is [Taurus]. 6°. 29'. 15": and therefore the Great Circle which in the Primitive Sphere according to _Eudoxus_, and by consequence in the time of the _Argonautic_ Expedition, was the _Colurus Æquinoctiorum_ passing through the Stars above described; did in the end of the year 1689, cut the Ecliptic in [Taurus]. 6°. 29'. 15": as nearly as we have been able to determin by the Observations of the Ancients, which were but coarse.