Chap. lo. \A Trtatifetf BODIES. 



f the torride zone towards the circumference^ by rolling into 

 its place : and this, in great quantities ; and confcquently, the 

 polar airc rnuft draw a great train after it. 



Which rTweconfider the great extent of the torrid zone, wt 

 fhall eafily pcrfwade our fclvcs, that it muft reach on each fide, 

 to the very pole : for taking from Archimedes, that the fpheri- 

 -call fupcrficies of a portion of a fpherc, is to trie fuperficies of 

 the whole fphere, according as the parts of the axis of that 

 iphere comprifed within thefaid portion, is to the whole axis : 

 and confidering that (in our cife) the part of the axis compri- 

 fed within the torrid zone, is to the whole axis of the earth, in 

 about the proportion of 4. to. io;it muft of neceflity follow that 

 a fire or great heat refgmng in fo vaft an extent, will draw airc 

 very powerfully from the reft ofthe world. 



Neither let any man apprehend that this courfe ofthe funncs 

 elevating fb great quantities of acomes in the torrid zone, 

 fhould hinderthe courfe of gravity there: for firft the medium 

 as much rarer in the torrid zone then in other parts ofthe earth; 

 &: therefore the force of the dcicendrng-atomes needeth not to be 

 fo great there as in other places, to make -bodies defcend there 

 as fa ft as they do cllcwhere. Secondly, there being a perpetu- 

 all fupply of frefli aire from the pola-r parts, ftreaming continu- 

 ally into. the torrid zone; it muft of ncceffiry happen that in the 

 aire there come atomes to the torrid zone, of that groflene'frc 

 that .they cannot fuddenly be fo much tariffed astbe fubtiler 

 parts of aire that are tlrere : and therefore, the more thofe fub- 

 tiler parts are rarified, 2nd thereby happen to be carried up the 

 ftrocger and the thicker the heavier atomes muft defcend. And 

 hus;this coTJcnrfe of a ire from the polaT pnrts, mainti-ineth 

 -gravity wndertl.c ?odiack _, where^etherwilcall would be turn- 

 ed into 'fire, and fo hare -no gravity. 



Now, who confidereth the two hemffpherrs which tythe' 

 nquator a.ue ciw-ided ; will find that they -are not akcigct'ricr of ^rc 

 /quail corrrrirexiom ; but that our rttmiTphere, in \vhidh the ftrea'ms comin 

 ISforthpole is-corrrprited^is-mudh dryer thentl-rcotlTrr, 1 by-rca- IJfto^ne" 

 Ton cvfthe greater 'CDntirK-nt of land inthrs, amd the vafftcr traft race with on*. 

 f'en:mtrieitheT; awd 'therefore ilhc fupply whrch ct>merrrfrtrm 

 riswHwere hemifplKM-es, 1 !!!!^ needs be of drffererrtrraturts ; fhat 

 wbidhxnnTreda fromo wards fhc^Southpole, -being txrrrparecl to 



that 



