Celejlial and 'Terrejlrial Globes. 229

that time. If you then look at the firma,ment, you will see the constellations Cancer,Leo minor, Leo major, the great Bear, withthe head and wings of Virgo, on the westernside of the meridian ; and on the eastern sidethereof, the Ballance, Scorpio, Bootes, Her-cules, &c. successively following the firstpoint of Libra in their passage pver themeridian,

The correspondence of the fixed

stars.

292. Before we attempt an observation ofthis kind, a signal or warning star must befirst obtained; that is, such a star is to befought, as sliall have the same or nearly thesame quantity, either in degrees or time ofright ascension, reckoned from the first pointof Aries, as the place, over which any otherstar Ihstl then happen to be a correspondent,shall haye of longitude, reckoned eastwardof London.

It has been shewn, that declination in thecelestial, and latitude on the terrestrial, globe,mean one and the same thing, both beingmeasurgd by their distance from the equator •O 3 conse-

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