$o6 DISEASES Sect. XXXIII. i. s& 



tinclion to the tedium vitse. This quantity or fum of pleafura- 

 ble affection feems to contribute to the due or energetic per- 

 formance of the whole moveable fyftem, as well that of the heart 

 and arteries, as of digeflion and of abforption ; fmce without 

 the due quantity of pleafurable fenfation, flatulency and hypo- 

 chondriacifm afFe£t the inteftines, and a languor feizes the arte- 

 rial puHations and fecretions ; as occurs in great and continued 

 anxiety of the mind. 



2. Befides the febrile motions occafioned by irritation, de- 

 icribed in Sett. XXXII. and termed irritative fever, it frequent- 

 ly happens that pain is excited by the violence of the fibrous 

 contractions ; and other new motions are then fuperadded, in 

 confequence of fenfation, which we fhall term febris fenfitiva, 

 or fenfitive fever. It muff, be cbferved, that molt irritative fe- 

 vers begin with a decreafed exertion of irritation, owing to de- 

 fect of flimulus -, but that on the contrary the fenfitive fevers 

 or inflammations, generally begin with the increafed exertion of 

 fenfation, as mentioned in Seel. XXXI. on temperaments : for 

 though the cold fit, which introduces inflammation, commences 

 with decreafed irritation, yet the inflammation itfelf commences 

 in the hot fit during the increafe of fenfation. Thus a common 

 puftule, or phlegmon, in a part of little fenfibility does not ex- 

 cite an inflammatory fever ; but if the ftomach, inteftines, or 

 the tender fubftance beneath the nails, be injured, great fenfa- 

 tion is produced, and the whole fyftem is thrown into that kind 

 of exertion, which conftitutes inflammation. 



Thefe fenfitive fevers, like the irritative ones, refolve them- 

 felves into thole with arterial ftrength, and thofe with arterial 

 debility, that is with excefs or defect of fenforial power ; thefe 

 may be termed the febris fenfitiva pulfu forti, fenfitive fever 

 with ftrcng pulfe, which is the fynocha, or inflammatory fever ;• 

 and the febris fenfitiva pulfu debili, fenfitive fever with weak 

 pulfe, which is the typhus gravior, or putrid fever of fome 

 writers. 



3. The inflammatory fevers, which are here termed fenfitive 

 fevers with ftrong pulfe, are generally attended with fome topical 

 inflammation, as pleurify, peripneumony, or rheumatifm, which 

 diftinguifhes them from irritative fevers with ftrong pulfe. The 

 pulfe is ftrong, quick, and full ; for hi this fever there is great 

 irritation, as well as great fenfation, employed in moving the 

 arterial fyftem. The fize, or coagulable lymph, which appears 

 on th< blood, is probably an increafed fecretion from the in- 

 flamed internal lining of the whole arterial fyftem, the thinnef 

 part being taken av t>7 the increafed abforption of the in- 

 flamed lym. I 



The 



