their heads, to cause right angle beames, and to giue great heat, yet the Sun being there sometimes about 24 degrees high doth cast a conuenient and meane heate, which there continueth without hindrance of the night the space of sixe moneths (as is before sayd) during which time there followeth to be a conuenient, moderate and temperate heat:  or els rather it is to be suspected the heat there to be very great, both for continuance, and also, Quia virtus vnita crescit, the vertue and strength of heat vnited in one increaseth.  If then there be such a moderate heate vnder the poles, and the same to continue so long time; what should mooue the olde writers to say there cannot be place for habitation.  And that the certainty of this temperate heat vnder both the poles might more manifestly appeare, let vs consider the position and quality of the sphere, the length of the day, and so gather the height of the Sunne at all times, and by consequent the quality of his angle, and so lastly the strength of his heat.

Those lands and regions lying vnder the pole, and hauing the pole for their Zenith, must needs haue the Equinoctiall circle for their Horizon:  therefore the Sun entring into the North signes, and describing euery 24 houres a parallel to the Equinoctiall by the diurnall motion of Primum mobile, the same parallels must needs be wholly aboue the Horizon:  [Sidenote:  The Sunne neuer setteth in 182 dayes.] and so looke how many degrees there are from the first of Aries to the last of Virgo, so many whole reuolutions there are aboue their Horizon that dwell vnder the pole, which amount to 182, and so many of our dayes the Sunne continueth with them.  During which time they haue there continuall day and light, without any hindrance of moist nights. [Sidenote:  Horizon and Equinoctiall all one vnder the pole.] Yet it is to be noted, that the Sunne being in the first degree of Aries, and last degree of Virgo, maketh his reuolution in the very horizon, so that in these 24 houres halfe the body of the Sunne is aboue the horizon, and the other halfe is vnder his only center, describing both the horizon and the equinoctiall circle.

And therefore seeing the greatest declination of the Sunne is almost 24 degrees, it followeth, his greatest height in those countries to be almost 24 degrees. [Sidenote:  London.] And so high is the Sun at noone to vs in London about the 29 of October, being in the 15 degree of Scorpio, and likewise the 21 of Ianuary being in the 15 of Aquarius.  Therefore looke what force the Sun at noone hath in London the 29 of October, the same force of heat it hath, to them that dwell vnder the pole, the space almost of two moneths, during the time of the Summer solstitium, and that without intermingling of any colde night; so that if the heat of the Sunne at noone could be well measured in London (which is very hard to do because of the long nights which ingender great moisture and cold) then would manifestly appeare by expresse numbers the maner of the heat vnder the poles, which certainly must needs be to the inhabitants very commodious and profitable, if it incline not to ouermuch heat, and if moisture do not want.