Celejlial and T’erresirial Globes. 265

with respect to a fixed star, is performed in.23 hours, 56 minutes, 4 seconds; there-fore the unequal progression of the earththrough her elliptical orbit, (as she takes al-most eight days more to run through thenorthern half of the ecliptic, than she doesto pass through the southern) is the reasonthat the length of the day is not exactlyequal to the time in which the earth per-forms its rotation about its axis.

2dly, From the obliquity of the eclipticto the equator, on which last we measuretime; and as equal portions of one do notcorrespond to equal portions of the other,the apparent motion of the fun would notbe uniform ; or, in other words, those pointsof the equator which come to the meridian,with the place of the fun on different days,would not be at equal distances from eachother.

This last is easily seen upon the globe,by bringing every tenth degree of the eclip-tic to the graduated side of the strong brassmeridian, and you will find that each tenthdegree on the equator will not come thitherwith it, but in the following order from Vto D, every tenth degree of the ecliptic

comes