(2143) 
In the Fourth fie hatft endeavourM to comprife all what he thinks is 
hitherto with any certainty known of the y^wW^ ^ where, a- 
mongft a great number of other Phoenomenaj he giveth a particular 
explication of Fevers, efteeming.that all the ftrange Symptoms there- 
of may be very well explain*d by only fuppofmg, that a little porti- 
on of our Blood, or of fome humor mixing with it when it pafl'eth 
to the Heart, comes to be ftop'd by fome caufe or other, in fome 
place of our Body, whence it begins not to flow but. at the end of a 
certain time, and when it is fo corrupted that it fomewhat refcm- 
bleth Green fVeod in its manner of kindling, that is to fay • this Wood 
being caft into the Fire, feems at firft to have no difpofition at all 
to take fire, but appears rather capable to extinguifli it fo alfo thh 
portion of corrupted humour is at firft indifpofed to be heated and 
dilated, when it comes to pafs through the Heart but then as the 
Greenwood burns at length more fiercely than what h Dry ^ fo 
this humour may at lad: be heated and rarified much more than the- 
Bloud is in its ordinary temper, &c, 
IV. Nov^ Hypothefios de FVLMONVM MOTV & RESPI- 
RATION IS VSV Specimen. Londini 1671. in 8**. 
The Anonymous Author of this fmall Trad being of opinion, that~ 
none of thofe, that have hitherto written of the Motion of the Lungs 
and the V[e 0^ Refpirmon^ have lighted upon the truth utidertakech 
to (hew, that the Lungs do not, as hath been hitherto received, fol- 
low the Motion of the Thorax and Diaphragme, nor are moved and 
filled, like Bellows,, becaufe they are diftended , alledging that he 
hathobferved from the fiiapc and Scituation of the Diaphragme, and 
from its Connexion with the other -2///^,^, and the Breaft and Abdo- 
men, that the faid cannot be moved up and down, or thr 
Cheft, by the Syfio/e thereof, be dilated and Infpiration performed 
forafmuch as it is both above and below, by the intervention of di- 
vers membrans, foconneded with other parts, that it can neither 
rife nor fubfide, no not fo much as be impelled up and down: But 
that this iJi^caaonly be moved forwards extrorfufn and backwards 
trorfnmh forwards in Infpiration, backwards in Exfpiration. And. 
efteeming this to be its proper motion, moft fuitabfc to its Eabrick, 
Scite,and the whole work of Refpiration V he declareth openly, that 
the Motion and Inflation of the Lungs depends not upon the Motion 
of the Thorax and Diaphragme,but that,for Ififpirmon ^tht.Lxxngs are 
dilatedby the Elaftick force of the Air rufliing in 'y and that upon, 
their Dilatation follows the Intumefccnce of the Diaphragme as of a 
Sail, and its protrufion forwards , and thereupon furt-her the pro = 
pulfion of the T'^c^r^A: : KndiXhdil ion Expiration ^ the Diaphragme is- 
again contrafted, and reftored to its juft figure and confiftence, and. 
the now effete, cloggM and fpring-lefs Air driven out: This Au- 
thor conceiving, that as long as the force of the infpired Air exceeds 
the El^ftic power or the refiftence of the Air or the halituQus fab» 
