Mifcellanea Curioja. 391 



Wherefore, in order to underftand a KccJe 

 both what might Induce the firlt Matters of our 

 Profeffion to Po nice and ftri£r. an Oblervance in 

 this point ; and what grounds there may be now, 

 for a more due regard to their Precepts, even 

 upon the fcore of the Lunar Attraction onij s I 

 propofe the following Remarks. 



1. All Epidemic Difeafes do in their regular 

 courfe require a dated time, in which they come 

 to their height, decline, and leave the Body free. 

 This is fo conftant and certain, that when a 

 Fever of any Conftitution which is continual in 

 one Subject, happens from fbme other caufe, in 

 another to be intermitting, the Paroxylms do al- 

 ways return Co often as all together to make up 

 jufl: as many days of Illnefs as he fuffers, whoft 

 Diftemper goes on from beginning to end, with-; 

 out any abatement. 



' Dr, Sydenham, a fworn Enemy to all Theories, 

 learn 'd thus much from downright Obfervation ; 

 and gives this reafbn why Autumnal Quartans 

 hold fix Months, becaufe by computation the 

 Fits of fb long a time amount to 3 3 6 hours, or 

 14 days, the period of a continual Fever of the 

 fame Seafon. (a) 



So Galen takes notice that when an Exquifite 

 Tertian *fe 'terminated infeven Paroxylms, a true 

 Continual at the fame time has its Crifis in (even 

 days; that is, the Fever lafts as long, in one as 

 in the other, in as much (fays he) as a Fit in an 

 Intermitting Feaver anfwers to a day in a Continu* 

 al (b). Now this fo comes to pafs, becaufe 



C 3 z, la 



*{a; DeFeher. Intermit. Ann. 1661. pag» 



ft,} Cmmnu in Agbw, $9, lib* 4, SS> 4c Crififa life? |? J? §i 



