Rectify the globe for the latitude, zenith, and Sun’s place: Turn the globe, and the quadrant of altitude, backward or forward, ’till the center of that Star meets the quadrant in the degree of altitude given; then the index will point the true hour of the night; and also where the quadrant cuts the horizon, will be the azimuth of the Star at that time. _If the Latitude, the Sun’s Altitude, and his Declination (instead of his Place in the Ecliptic) are given; to find the Hour of the Day and Azimuth._ Rectify the globe for the latitude and zenith, and having brought the _equinoctial colure_ to the meridian, set the index to 12 at noon; which being done, turn the globe and the quadrant, until the given declination in the equinoctial colure, cuts the altitude on the quadrant; then the index will shew the _Hour_ of the day, and the quadrant cut the _Azimuth_ in the horizon. _If the Altitude of two Stars on the same Azimuth were given; to find the Latitude of the Place._ Set the quadrant over both Stars at the observed degrees of altitude, and keep it fast upon the globe with your fingers; then slide the meridian up or down in the notches, ’till the quadrant cuts the given azimuth in the horizon; that elevation of the Pole will be the latitude required. PROB. XLIII. _Having the Latitude of the place, to find the degree of the Ecliptic, which rises or sets with a given Star; and from thence to determine the time of its_ Cosmical _and_ Achronical _rising and setting._ Having rectified the globe for the latitude, bring the given Star to the Eastern side of the horizon, and mark what degree of the ecliptic rises with it: Look for that degree in the wooden horizon, and right against it, in the kalendar, you will find the month and day when the Star _rises Cosmically_. If you bring the Star to the Western side of the horizon, that degree of the ecliptic which rises at that time, will give the day of the month when the said Star _sets Cosmically_. So likewise against the degree which sets with the Star, you will find the day of the month of the _Achronical setting_; and if you bring it to the Eastern part of the horizon, that degree which sets at that time will be the Sun’s place when the Star _rises Achronically_. Thus, in the latitude of _London_, _Syrius_, or the _Dog-Star_, rises _Cosmically_ the 10th of _August_, and sets _Cosmically_ the 10th of _October_. _Aldebaran_, or the _Bull’s Eye_, rises _Achronically_ on the 22d of _May_, and sets _Achronically_ on the 19th of _December_. PROB. XLIV. _Having the Latitude of the place, to find the time when a Star rises and sets_ Heliacally.