| Sun’s Place. | Declination. | ||||
|---|---|---|---|---|---|
| Deg. | Min. | Deg. | Min. | ||
| April 23 | ♉ | 3 | 00 | 12 | 32 N. |
| July 31 | ♌ | 7 | 51 | 18 | 20 N. |
| October 26 | ♏ | 2 | 49 | 12 | 28 S. |
| January 20 | ♒ | 0 | 49 | 20 | 07 S. |
Prob. VI. To rectify the Globe for the Latitude, Zenith, and the Sun’s Place.
1. For the Latitude: If the place be in the Northern hemisphere, raise the arctic Pole above the horizon; but for the South latitude you must raise the antarctic; then move the meridian up and down in the notches, until the degrees of the latitude counted upon the meridian below the Pole, cuts the horizon, and the globe is adjusted to the latitude.
2. To rectify the Globe for the Zenith: Having elevated the globe according to the latitude, count the degrees thereof upon the meridian from the equator, towards the elevated Pole, and that point will be the zenith or the vertex of the place; to this point of the meridian fasten the quadrant of altitude, so that the graduated edge thereof may be joined to the said point.
3. Bring the Sun’s place in the ecliptic to the meridian, and then set the hour index to XII at Noon, and the globe will be rectified to the Sun’s Place. If you have a little mariner’s compass, the meridian of the globe may be easily set to the meridian of the place.
Prob. VII. To find the Distance between any two given places upon the Globe, and to find all those places upon the globe that are at the same distance from a given place.
Lay the quadrant of altitude over both the places, and the number of degrees intercepted between them being reduced into miles, will be the distance required: Or, you may take the distance betwixt the two places with a pair of compasses, and applying that extent to the equator, you’ll have the degrees of distance as before.