272 Description and Use of the

the globe, moving your eye lower andlower, till you can but just see the sun:then bring the string held as before to thispoint upon the globe, that it may just ob-scure the sun from your sight, and the de-gree on the aforesaid hour circle, which thestring then lies upon, will be the fun’s al-titude required, for his rays would shew thesame point if he shone out bright.

Note. The moon’s altitude may be ob-served by either of these methods, and thealtitude of 'any. star by the last of them.

PROBLEM LVIII.

To place the terrestrial globe in thefun’s rays, that it may representthe natural position os the earth,either by a meridian line, or with-out it.

310. If you have a sneridiah line, set thenorth and south points of the broad papercircle directly over it, the north pole of theglobe being elevated to the latitude of theplace, and standing upon a level plane, bringthe place you are in under the graduated

side