V2 x* rrMf/S */B O DIBS. Chap, 20. 



.: v ate in orofTcjiTcvtrthclefTc..!!! feverall particular little parts 

 ofjt(& eibccially at the edges of thole ft reams that are driven on 

 farter then the re(t> by an extraordinary and accidental! violent 

 caufe) it is variofly imerrupted 3 and fometimes entirely flopped, 

 and other times even driven back to the northwards. 



And ifpcradventureany man fhould think that this will 

 not fall out, becauleench ftrcam feemeth to be alwayes coming 

 trom his own Pole to the equator, and therefore will oppole 

 and driveback any bodies that with lefTe force fliould ftriveto 

 Ivvim againfr. it; or if they flick unto them, will carry them back 

 co the equator. We anfwer, that we muft not conceive that the 

 whole aire in body doth every where equally incroch from the 

 polewards upon the torrid zone;but,as it were, in certain brooks 

 or rivolcts, according as the contingency of all caufes put toge- 

 ther doth make it fall out. 



Now then out of what we have faid it will folk>w;that fincc 

 all the aire in this our hemifphere is as it were ftrewed over and 

 fowed with abundance of northern atomcs, & thatfbmc brooks 

 of them are in ftation, others in a motion of retrogradation 

 back to their own north pole ; the fouthern atomes ( which 

 coming upon them at the equator do nor onely prcffe in among 

 them, wherefocver they can find admittance, but do alfo go on 

 forwards to the north pole in feverall files by trrcmfelves, being 

 driven that way by the fame accidcntall cauies, which make 

 the others retire back) fcizing in their way upon the northern 

 ones in foch manner as we defcribcd in filtration ; and thereby 

 creeping along by them wherefocver they find them ftanding 

 ftill, and going along with them wherefbever chcy find them 

 going bacfk;murt of neceffity find paflage in great quantities to- 

 \vards, and even to the north pole ; though fome parts of them 

 will ever & anon be checked in this their journey by the main 

 current prevailing over ibme accidentall one, and fo be carried 

 fcack again to the equator, whofe line they had crofled. 



And this effcft cannot choole but be more or leflc according 

 to the fcafons of the year: for when the fun is in the Tropick of 

 Capricorn.thefbuthcrn atomes will flow in much more abun- 

 dance, and with farre greater fpccd, into the torrid zone, then 

 the northern atomes can ; by rcafbn of the funs approximation 

 to the fouth, and his diftancc from the north pole j fince he 



work- 



