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A treatise describing the construction, and explaining the use of new celestial and terrestrial globes : designed to illustrate in the most easy and natural manner, the phaenomena of the earth and heavens, ant to shew the correspondence of the two spheres : with great variety of astronomical and geographical problems / by George Adams, mathematical instrument-maker ...
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CekJUal and c terrejirial Globes. z6j

We now proceed to shew howthe terrestrial globe will representthe real phpenomena relating to theearth, when actually compared withthe refulgent rays emitted from thegreat sphere of day.

307. The meridians on our new terre-strial globes, being secondaries to the equa-tor, are also hour circles, and are markedas such with roman figures under the equa-tor, and at the polar circles. But observe,there is a difference in the figures placedto the same hour circle ; if it cuts the Hidhour upon the polar circles, it will cutthe IXth hour upon the equator, whichis six hours later, and so of all the rest.

Through the great Pacific sea, and theintersection os Libra, is drawn a broad me-ridian from pole to pole, it passes throughthe Xllth hour upon the equator, and theVlth hour upon each of the polar circles ;this hour circle is graduated into degreesand parts, and numbered from the equatortowards either pole,

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