...more Northerly, than it did in the Year 1727. As this Appearance in^ Ttraconis, indicated a Diminution of the Inclination of the Earth's Axis to the Plane of the Ecliptic; and as feveral Aftronomere have fuppofed that Inclination to diminifh regularly; if this Phenomenon...

...admiffible. Granting, for argument's fake, that there is, and has been, a regular and fucceffive diminution of the inclination of the earth's axis to the plane of the ecliptic, and making the mof t liberal allowances with regard to its quantity, thefe conceffions will not, according...

...admiflible. Granting, for argument's fake, that there is, and has been, a regular and fuccefiive diminution of the inclination of the earth's axis to the plane of the ecliptic, and making the moft liberal allowances with regard to its quantity, thefe conceffions will not, according...

...coolnefs of night in tropical regions. Our philosophical pupils will also recollect, that in consequence of the inclination of the earth's axis to' the plane of the ecliptic, conjoined with its annual and diurnal rotations, it so happens that the length of the day must be invariably...

...fun. We have now only to fhew what caufes the changes of pofition in the terminator, which arex i. The inclination of the earth's axis to the plane of the ecliptic, or orbit in which it moves. 2. That through the whole of it's annual courfe, the axis of the earth...

...d'fivicnt fealons of the year, with all the delightful varieties thereof, are found to be owing to the inclination of the Earth's axis to the plane of the Ecliptic, in which 6 E 8 8 2 8 3 8 3 3 57 3 57 the Sun always appears to move; bung 66 degrees 31 minutes and...

...768 76.4. 77.6 78.6 The observations of the foregoing stars are the most proper, to prove the change of the inclination of the earth's axis to the plane of the ecliptic; those which follow will show in what manner the stars, that lie near the equinoctial colure are affected,...

...a part of the revolving globe. The changes in the position of the terminator are occasioned—1. By the inclination of the earth's axis to the plane of the ecliptic, or orbit in which it r 2 84 OF THE SEASONS OF THE YEAR. moves. — 2. Because, through the whole of...

...THE LUNARIUM. Plate \%,jig. 2. Having thus illustrated the phenomena, which arise particularly from the inclination of the earth's axis to the plane of the ecliptic, from its rotation round its axis, and revolution round the sun ; I now proceed to explain, by this...

...the colure of the folftices. This charge of the inclination of the earth's axis to the pUne of tlie ecliptic was called the NUTATION of the axis by Sir ISAAC NEWTON ; who mowed, that a change of nearly a fecoud, mult obtain in a year by the action of the fun on the prominent...