CHAP. XI.
Of Aire.
a 1.1 NExt the sphear of the Moon (saith Chrysippus) is the element of Aires interposed betwixt the Sea and Heaven (b 1.2 spheri∣call in figure)c 1.3 consecrated by the name ofd 1.4 Iuno, Sister and Wife of Iupiter, who is the Aether▪ betwixt these there is a neer conjunction.
e 1.5 The Aire is divided into three regions, the highest, the mid∣dle, and the lowest. The highest region is the hottest and dryest, and rarest, by reason of the vicinity of the eternall fires. The lowest and neerest to the earth is thick and caliginous; because it receiveth terrene exhalations. The middle region is more tem∣perate then the higher and lower, as to siccity and rarity, but colder then both. This, wherein the clouds and winds are gene∣rated, is, according to Possidonius, forty furlongs above the earth. Next to it is the pure and liquid aire of untroubled light. From the turbulent part to the Moon is twenty hundred thousand furlongs.
f 1.6 To the aire is attributed the primitive cold.
g 1.7 As concerning things in the Aire. Winter is the rigour of the aire, next above the earth, occasion'd by the remotenesse of the Sun, and is the coldest of the seasons of the year. Spring is the season succeeding Winter, preceding Summer, and is a good temperature of the air, occasion'd by approach of the Sun. Sum∣mer is that season of the year, when the aire above the earth is warmed, by the Suns accesse towards the north. Autumne that season of the year which followeth Summer, and precedeth Winter, is made by the return of the Sun from us.
h 1.8 Winter commeth, when the aire is predominant in thick∣nesse, and is forced upward: Summer, when the fire is predomi∣nant, and driven downward.
i 1.9 Winde is a fluxion of the aire, having severall names, from the variety of places; as for example: That which bloweth from the darknesse of the night, and Sun-setting, is called Zephy∣rus; from the East and Sun-rising, Apeliotes; from the North, Boreas; from the South Lybs.k 1.10 It is occasion'd by the Sun's exte∣nuation of the vapours.