238 'Description and Xlse of the

tensive science of geography and astronomy,the principal requisites whereby they mayacquire universal knowledge, we shall pro-ceed to illustrate this system of the naturalagreement)between the celestial and ter-restrial spheres, by a few interesting ex-amples.

Example I.

When the star marked 7 in thehead of Draco is perpendicularto the city of London, the twelvefollowing stars may be seen fromthence at the fame time, whenthey will also be perpendicular toas many places upon the earth.

296. The signal or warning star is y inthe head of Draco, which comes upon themeridian with the 268th degree of rightascension; it will be vertical to the city ofLondon two minutes of time, after the starmarked k, in the milky way, near the equi-nox, has passed the meridian, at which timethe twelve following stars will be verticalto the places they stand against.

West