...diurnal motions and general aspects of the sun in different parts of the earth, which are owing partly to the inclination of the axis of the earth to the plane of the ecliptic, and partly to the different positions in which a spectator is placed in different zones of the globe....

...heat of our summer is generally greatest. The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit ; or, in other words, to the eeliptic. If its axis were perpendicular to the ecliptic, the...

...action from that they manifest singly, and for which there is not a shadow of evidence. The varying inclination of the axis of the earth to the plane of the ecliptic, and the disturbances of the planets by each other's gravity, are rotations, not gradations ; each disturbance...

...the system of the universe, for the sun to be deprived of the power of communicating light, or that the inclination of the axis of the earth to the plane of its orbit might be increased ; but we cannot conceive it possible for the table on which we are leaning...

...of its surface are heated by the solar rays; and, owing to "the simple yet stupendous contrivance of the inclination of the axis of the earth to the plane of its orbit," the northern and southern hemispheres are brought alternately more directly under the solar...

...such, the sphere would appear parallel. As the limits of the zones and of the climates depend upon the inclination of the axis of the earth to the plane of the ecliptic, it is of importance to determine thU inclination. We may easily discover it by observing at the same...

...what manner the changes of the seasons, the increase and decrease of the days, & '•., ore caused by the inclination of the axis of the earth to the plane of the ecliptic, at an angle of 66i degrees, and how tho axis, by remaining ]>araUel to itself ir. all poiuts of its...

...heat of our summer is generally greatest. The true cause of the variation of the seasons consists in the inclination of the axis of the earth to the plane of its orbit, or in other words, to the ecliptic. If its axis were perpendicular to the ecliptic, the...

...not appear to be strictly the case, as we cannot represent the star removed to a sufficient distance. The inclination of the axis of the earth to the plane of the sun's apparent path, is the cause of all the variety of the seasons ; of the differing lengths of the...

...and south, and his apparent passage through the plane of the equinoctial, twice a year, are caused by the inclination of the axis of the earth to the plane of the ecliptic, and her revolution around the sun. What we have here said will serve more fully to illustrate Lesson...