Of the temperature of colde Regions all the Sommer long, and also how in
Winter the same is habitable, especially to the inhabitants thereof.
The colde Regions of the world are those, which tending toward the Poles Arctike, and Antarctike, are without the circuite or boundes of the seuen Climates: which assertion agreeable to the opinion of the olde Writers, is found and set out in our authour of the Sphere, Iohannes de Sacrobosco, where hee plainely saith, that without the seuenth Climate, which is bounded by a Parallel passing at fiftie degrees in Latitude, all the habitation beyonde is discommodious and intolerable. [Sidenote: Nine Climates.] But Gemma Frisius a late writer finding England and Scotland to be without the compasse of those Climates, wherein hee knewe to bee very temperate and good habitation, added thereunto two other Climates, the vttermost Parallel whereof passeth by 56. degrees in Latitude, and therein comprehendeth ouer and aboue the first computation, England, Scotland, Denmarke, Moscouia, &c which all are rich and mightie kingdomes.
[Sidenote: A comparison betweene Marochus and England.] The olde writers perswaded by bare conjecture, went about to determine of those places, by comparing them to their owne complexions, because they felt them to bee hardly tolerable to themselues, and so took thereby an argument of the whole habitable earth; as if a man borne in Marochus, or some other part of Barbarie, should at the latter end of Sommer vpon the suddeine, either naked, or with his thinne vesture, bee brought into England, hee would judge this Region presently not to bee habitable, because hee being brought vp in so warme a Countrey, is not able here to liue, for so suddeine an alteration of the colde aire: but if the same man had come at the beginning of Sommer, and so afterward by little and little by certaine degrees, had felt and acquainted himselfe with the frost of Autumne, it would haue seemed by degrees to harden him, and so to make it farre more tollerable, and by vse after one yeere or two, the aire would seeme to him more temperate. It was compted a great matter in the olde time, that there was a brasse pot broken in sunder with frosen water in Pontus, which after was brought and shewed in Delphis, in token of a miraculous colde region and winter, and therefore consecrated to the Temple of Apollo.
This effect being wrought in the Parallel of fouretie three degrees in Latitude, it was presently counted a place very hardly and vneasily to be inhabited for the great colde. And how then can such men define vpon other Regions very farre without that Parallel, whether they were inhabited or not, seeing that in so neere a place they so grossely mistooke the matter, and others their followers being contented with the inuentions of the olde Authors, haue persisted willingly in the same opinion, with more confidence then consideration of the cause: so lightly was that opinion receiued, as touching the vnhabitable Clime neere and vnder the Poles.
[Sidenote: All the North regions are habitable.] Therefore I am at this present to proue, that all the land lying betweene the last climate euen vnto the point directly vnder either poles, is or may be inhabited, especially of such creatures as are ingendred and bred therein. For indeed it is to be confessed, that some particular liuing creature cannot liue in euery particular place or region, especially with the same ioy and felicitie, as it did where it was first bred, for the certeine agreement of nature that is betweene the place and the thing bred in that place; as appeareth by the Elephant, which being translated and brought out of the second or third climat, though they may liue, yet will they neuer ingender or bring forth yong.[63] Also we see the like in many kinds of plants and herbs; for example, the Orange trees, although in Naples they bring forth fruit abundantly, in Rome and Florence they will beare onely faire greene leaues, but not any fruit: and translated into England, they will hardly beare either flowers, fruit, or leaues, but are the next Winter pinched and withered with cold: yet it followeth not for this, that England, Rome, and Florence should not be habitable.
[Sidenote: Two causes of heat.] In the prouing of these colde regions habitable, I shalbe very short, because the same reasons serve for this purpose which were alleged before in the proouing the middle Zone to be temperate, especially seeing all heat and colde proceed from the Sunne, by the meanes either of the Angle which his beames do make with the Horizon, or els by the long or short continuance of the Suns presence aboue ground: so that if the Sunnes beames do beat perpendicularly at right Angles, then there is one cause of heat, and if the Sunne do also long continue aboue the Horizon, then the heat thereby is much increased by accesse of this other cause, and so groweth to a kinde of extremitie. And these two causes, as I sayd before, do most concurre vnder the two Tropicks, and therefore there is the greatest heat of the world. And likewise, where both these causes are most absent, there is greatest want of heat, and increase of colde (seeing that colde is nothing but the priuation and absence of heate) and if one cause be wanting, and the other present the effect will grow indifferent. Therefore this is to be vnderstood, that the neerer any region is to the Equinoctiall, the higher the Sunne doth rise ouer their heads at noone, and so maketh either right or neere right Angles, but the Sunne tarieth with them so much the shorter time, and causeth shorter dayes, with longer and colder nights, to restore the domage of the day past, by reason of the moisture consumed by vapour. But in such regions, ouer the which the Sunne riseth lower (as in regions extended towards either pole) it maketh there vnequall Angles, but the Sunne continueth longer, and maketh longer dayes, and causeth so much shorter and warmer nights, as retaining warme vapours of the day past. For there are found by experience Summer nights in Scotland and Gothland very hot, when vnder the Equinoctiall they are found very cold. [Sidenote: Hote nights nere the pole. Colde nights vnder the Equinoctiall.] This benefit of the Sunnes long continuance and increase of the day, doth argument so much the more in colde regions as they are nerer the poles, and ceaseth not increasing vntill it come directly vnder the point of the pole Arcticke, where the Sunne continueth aboue ground the space of sixe moneths or halfe a yere together, and so the day is halfe a yere long, that is the time of the Sunnes being in the North signes, from the first degree of Aries vntill the last of Virgo, that is all the time from our 10 day of March vntill the 14 of September. [Sidenote: One day of sixe moneths.] The Sunne therefore during the time of these sixe moneth without any offence or hinderance of the night, giueth his influence vpon those lands with heat that neuer ceaseth during that time, which maketh to the great increase of Summer, by reason of the Sunnes continuance. [Sidenote: Moderate heat vnder the poles.] Therefore it followeth, that though the Sunne be not there very high ouer 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.
For as in October in England we finde temperate aire, and haue in our gardens hearbs and floures notwithstanding our cold nights, how much more should they haue the same good aire, being continuall without night. This heat of ours continueth but one houre, while the Sun is in that meridian, but theirs continueth a long time in one height. This our heat is weake, and by the coolnesse of the night vanisheth, that heat is strong, and by continuall accesse is still increased and strengthened. [Sidenote: Comodious dwelling vnder the poles.] And thus by a similitude of the equal height of the Sun in both places appeareth the commodious and moderate heat of the regions vnder the poles.
And surely I cannot thinke that the diuine prouidence hath made any thing vncommunicable, but to haue giuen such order to all things, that one way or other the same should be imployed, and that euery thing and place should be tollerable to the next: but especially all things in this lower world be giuen to man to haue dominion and vse thereof. Therefore we need no longer to doubt of the temperate and commodious habitation vnder the poles during the time of Summer.