Page:Medical Heritage Library (IA b30513546).pdf/72

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58
Astronomical Dialogues.

We must then return again to the Globe, Madam, said I, and by opening the North Window, direct its Pole to point up to the Pole Star, and so set it as near as we can due (a)(a) Here the Brass Meridian of the Globe was placed due North and South. North and South.

There is no need of great Accuracy for our present Purpose; and I think it stands pretty true now. Before we look or go out again, pray, Madam, please to observe this Situation of the Globe, and then you will easily see how the Position of the Stars do at present correspond with it: There is indeed, now not any very eminent Star, or one of the first Light or Magnitude, exactly on the Meridian, either North or South: But you will see this great Star, which is called the Spica Virginis.Virgin's Spike, because painted on an Ear of Corn which she holds in her Hand, a little to the Westward of the South, and about 28 Degrees high above the Horizon; as you see, appears by bringing this Quadrant of Altitude, screwed in the Zenith, to it; whikh is an Arch of 90°, and being moveable, serves to shew the Altitude of any Star or Planet.

I See that, said the Lady, here on the Globe; But how shall I be able to find and count Degrees in the Heaven?

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