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great; for it presents to our view the true and perfect ſituation of the celeſtial ſphere, together with all the Stars, and other celeſtial bodies, in their true poſitions with reſpect to each other, and to the Horizon, and Meridian, and all the other Circles of the Spheres: this effect cannot fail to delight and gratify every beholder, who will make their various uſes of it accordingly, and by continuing to turn the Index by a good regulated clock, or watch, as often as we chuſe to take an obſervation, we ſhall moſt beautifully diſcern and comprehend the diurnal rotation of the Earth upon its axis, from Weſt to East, cauſing the apparent diurnal motion of the Heavens from Eaſt to Weſt.
Problem 2. To find the Sun's place in the Ecliptic, ſuppoſe on Auguſt 14th, and November 29th, at noon. Turn the director to the days propoſed, and you will find it points to 22° of Leo on August 14th, and 7° of Sagittary on November 29th, for anſwer.
Problem 3. To find the Sun's Declination on June 4th, and December 1ſt. Find the Sun's place by the ſecond Problem, for each day, and bring theſe points of the Ecliptic to the Meridian of the Index North, and it gives 22° 30' North, on June 4th, and 21° 40' South, on December 1ſt.
Problem 4. To find the Sun's right Aſcenſion in time, and degrees, on April 9th, and on September 2d. Lay the director to each day, and it interſects the Sun's place in the Ecliptic, and his right Aſcenſion in the
