DISEASES OF IRRITATION. SHOT. XXXII. r. 



not an effort of nature to relieve her f elf. Doftrinq 

 cffpafm. 



I. WHEN the contra&ile iides of the heart anc} 

 arteries perform a greater number pf pulfations in 

 a given time, and move through a greater area at 

 each pulfation, whether thefe motions are occafion- 

 ed by the ftimulus of the acrimony or quantity of 

 the blood, or by their affociation with other irri- 

 tative motions, or by the increafed irritability of the 

 Arterial fyftem, that is, by an increafed quantity 

 of fenforial power, one kind of fever is produced ; 

 which may be called Synocha irritativa, or Febris 

 irritativa pulfu forti, or irritative fever with ftrong 

 pulfe. 



When the contra&ile fides of the heart and arte- 

 ries perform a greater number of pulfations in 4 

 given time, but move through a much lefs area at 

 each pulfation, whether thefe motions are occa- 

 iioned by defect of their natural ftimuli, or by 

 the defect of other irritative motions with which 

 they are aflbciated, or from the inirritability of the 

 * arterial fyftem, that is, from a decreafed quantity 

 of fenforial power, another kind of fever arifes ; 

 which may be termed, Typhus irritativus, or Fe- 

 bris irritativa pulfu debili, or irritative fever with 

 weak pulfe. The former of thefe fevers is the 

 fynocha of nofologifts, and the latter the typhus 

 miticr, or nervous fever. In the former there ap- 

 pears to be an increafe of fenforial power, in the 

 latter a deficiency of it ; which is (hewn to be the 

 immediate caufe of flrength and weaknefs, as de- 

 fined in Sea. XII. 1.3. 



It fliould be added, that a temporary quantity of 

 ftrength or debility may be induced by the defect 

 or excefs of fHmulus above what is natural ; and 

 that in the fame fever debility always exifts during the 



cold 



