If we elevate the globe still higher, the circle of _perpetual Apparition_ will be nearer the equator, as will that of _perpetual Occultation_ on the other side. For example, Let us rectify the globe for the latitude of 80 degrees North: when the Sun’s declination is 10 degrees North; he begins to turn above the horizon without setting; and all the while he is making his progress from this point to the tropic of ♋, and back again, he never sets. After the same manner, when his declination is 10 degrees South, he is just seen at noon in the horizon; and all the while he is going Southward, and back again, he disappears, being hid just so long as before, at the opposite time of the year he appeared visible. Let us now bring the North Pole into the Zenith, then will the equinoctial coincide with the horizon; and consequently all the Northern parallels are above the horizon, and all the Southern ones below it. Here is but one day and one night throughout the year, it being day all the while the Sun is to the Northward of the equinoctial, and night for the other half year. All the Stars that have North declination, always appear above the horizon, and at the same height; and all those that are on the other side, are never seen. What has been here said of rectifying the globe to North latitude, holds for the same latitude South; only that before the longest days were, when the Sun was in ♋, the same happening now when the Sun is in ♑; and so of the rest of the parallels, the seasons being directly opposite to those who live in different hemispheres. I shall again explain some things delivered above in general terms, by particular problems. But from what has been already said, we may first make the following observations: 1. _All places of the Earth do equally enjoy the benefit of the Sun, in respect of time, and are equally deprived of it, the Days at one time of the Year, being exactly equal to the Nights at the opposite season._ 2. _In all places of the Earth, save exactly under the Poles, the Days and Nights are of equal length_ (viz. _12 hours each) when the Sun is in the equinoctial._ 3. _Those who live under the equinoctial, have the days and nights of equal lengths at all times of the year._ 4. _In all places between the equinoctial and the Poles, the days and nights are never equal, but when the Sun is in the equinoctial points_ ♈ _and_ ♎. 5. _The nearer any place is to the equator, the less is the difference between the length of the artificial days and nights in the said place; and the more remote the greater._ 6. _To all the inhabitants lying under the same parallel of latitudes the days and nights are of equal lengths, and that at all times of the year._ 7. _The Sun is vertical twice a year to all places between the tropics; to those under the tropics, once a year; but never any where else._