l£o OF THE LATITUDE AND LONGITUDE.

1V - sore he comes to the meridian NAS; and

. I2»

consequently, when it is noon to the inhabi-tants who live under the meridian N B S, itwill be some time before noon to the inhabitantswho live under the meridian NAS. And, onthe contrary, when it is noon at those placeswhich are situated under the meridian NAS,it will be some time after noon to the placeswhich are situated under the meridian N B S.

But as the fun appears to move uniformlyround the earth, and to describe a circle, whichcontains 360 degrees, in twenty-sour hours, hewill of course move through an arc of fifteendegrees in an hour. When it is noon, there-fore, at London, and at all other places whichlie under the same meridian, it will be oneo’clock in the afternoon at all those places whichlie under the meridian fifteen degrees to the eastof that of London.; and eleven o’clock in themorning, at all those places which lie under themeridian fifteen degrees to the west of that ofLondon. If the distance of the meridians bethirty degrees, it will make two hours differ-ence in the time; if forty-five degrees, threehours; and so on, reckoning according to thesituation of the places.

To make this matter still plainer, let us con-sider the situation of any two particular places;for instance, that of London and Paris. Themeridian of Paris is two degrees 22 minutes

east