...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 to the Sun, Moon,...

...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 ib Complemental...

...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 gradual change...

...produced in a manner at the fame time the moft fimple and the rhoft ftupendous (by the inclma» tion of the axis of the earth to the plane of the ecliptic) ; yet this mechanical contrivance alone would not have been fufficient (as I fhall endeavour to fhow)...

...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 than defects...

...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 of all the heavenly...

...and nights at the equator are always equal. Thus, the different seasons are clearly accounted for, by the inclination of the axis of the earth to the plane of its orbit,* combined with the parallel motion of that axis. CHAPTER V. Of the Origin of Springs and...

...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...

...and nights at the equator are always equal. Thus the different seasons are clearly accounted for, by the inclination of the axis of the earth to the plane of its orbit,* •combined with the parallel motion of that axis. CHAP. V. Of the Origin of Springs and...