...min. 57 fee- and the Right Afcenfion 55 deg. 17 rain. 03 fec,¿¿ The Obliquity of the Ecliptic, or the Inclination of the Axis of the Earth to the Plane of the Ecliptic, is the Principal Poftulatum upon which all the Calculations and Conclusions relating...

...thofe Circles. Let it meet with the Ecliptick in A ; the Arch PA will meafure the Angle PCH, which is the Inclination of the Axis of the Earth to the Plane of the Ecliptick; that is, it will be 66 J. Degrees ; and therefore the'-Arch EP, which is its Complement...

...Points E and P Fig. i. draw the great Circle EPA, meeting the Ecliptic AL in A ; the Arch PA mcafures the Inclination of 'the Axis of the Earth to the Plane of the Ecliptic, tax. the Angle PCH, which is found by Obfervation to be about 66° 30', and therefore...

...autumn, and all the variety of the fenfons, are produced by the fimple and admirable contrivance of the inclination of the axis of the earth to the plane of the ecliptic ; yet this mechanical difpofition would not have been alone fuffkient to produce that...

...subject to diseases and death; besides those arising from the asperities of the surface of our globe, and the inclination of the axis of the earth to the plane of the ecliptic; they are most of them so evidently weak, and capable of being retorted as beauties rather...

...on the other side of the equator from which he is retiring. It is easy, therefore, to see that it is the inclination of the axis of the earth to the plane of the ecliptic, and its constant parallelism, which occasion the change of the seasons. The sun being...

...as in Ferguson's Astronomy, chap. x. But, as this last method does not so clearly shew the obliquity of the axis of the earth to the plane of its orbit : take a boai d of any convenient dimensions, suppose two feet across, on which describe a circle,...

...Thus, the different seasons of the year are clearlyaccounted for by the inclination of the earth's axis to the plane of its orbit, combined with the parallel motion of this axis. 282. The motion of the sun, moon,, and stars, from east to west every twenty-four hours...

...confidently conclude, that the vicissitudes of the seasons, and the inequalities of day and night, are caused by the inclination of the axis of the earth to the plane of hs orbit. We, who have the happiness of being plated in a pleasant region of the temperate zone, can...

...southern hemisphere increasing. In all situations of the earth, the equator will be divided into two equal parts ; consequently, the days and nights at the equator...orbit, combined with the parallel motion of that axis. Of the Solar System. Plate XXL Fig. II. The solar system is so called because the sun is supposed to...