4. _If a body should steer upon an oblique course (or any where betwixt the meridian and the East or West points) he’ll continually change both latitude and longitude, and that more or less, according to the course he steers; and if he should go quite round the globe, he’ll differ in his account of time, as by the second Corol._ 5. _The people residing in the Easternmost of any two places, will reckon their time so much the sooner than those who live in the other place, according to the difference of longitude betwixt the two places, allowing one hour for every 15 degrees, &c. and the contrary._ II. _Of Zones and Climates_, &c. [Sidenote: _Zones_, _Torrid_, _Temperate_, and _Frigid_.] 4. _Zones_ are large tracts of the surface of the Earth, distinguished by the tropics and polar circles, being five in number; _viz._ one _Torrid_, two _Temperate_ and two _Frigid_. The _Torrid_, or _Burning Zone_, is all the space comprehended between the two tropics; the ancients imagined this tract of the Earth to be uninhabitable, because of the excessive heat, it being so near the Sun. All the inhabitants of the torrid zone have the Sun in their zenith, or exactly over their heads twice in every year; excepting those who live exactly under the two tropics, where the Sun comes to their zenith only once in a year. The two _Temperate Zones_ lie on either side of the globe, between the tropics and the polar circles. The two _Frigid Zones_ are those spaces upon the globe that are included between the two polar circles. [Sidenote: _Amphiscians._] [Sidenote: _Ascians._] The inhabitants of the Earth are also distinguished by the diversity of their _Shadows_. Those who live in the torrid zone, are called _Amphiscians_, because their noon-shadow is cast different ways, according as the Sun is to the northward or southward of their zenith; but when the Sun is in their zenith, they are called _Ascians_. [Sidenote: _Heteroscians._] [Sidenote: _Ascians Heteroscians._] [Sidenote: _Periscians._] The inhabitants of the temperate zones, are called _Heteroscians_, because their noon-shadow is always cast the same way: But those who live under the tropics are called _Ascians Heteroscians_; those who live in the frigid zones are called _Periscians_, because sometimes their shadow is cast round about them. These hard names are only _Greek_ words, importing how the Sun casts the shadow of the several inhabitants of the Earth; which would be a too trifling distinction to be made here, was it not for the sake of complying with custom. The inhabitants of the Earth are also distinguished into three sorts, in respect to their relative situation to one another, and these are called the _Periœci_, _Antœci_, and _Antipodes_. [Sidenote: _Periœci._]