47o THEORY OF FEVER. Sup. I. 8. n. 



a great accumulation of the fenforial power of aflbciation oc- 

 curs, which is exerted on the pulmonary and cutaneous abforb- 

 ents by reverfe fympathy* and produces a great abforption of 

 the fluid effufed into the cellular membrane in anafarca, with 

 dry fkin ; conftituting one kind of atrophy. 



But if at the fame time the fecernins: veflels of the ftomach 

 are itimulated into fo violent activity as to induce great confe- 

 quent torpor, as probably happens when contagious matter is 

 fwailowed into the ftomach with our faliva, thole of the heart 

 and arteries act feebly from the deficient excitement of the pow- 

 er of aflbciation ; and then the cutaneous and pulmonary fe- 

 cerning veflels act with greater force than natural, owing to the 

 accumulation of the fenforial power of aflbciation ; and unnatur- 

 al heat of the fkin, and of the breath fucceed ; but without 

 frequency of pulfe, conftituting the parefis irritativa of Clafs I. 

 2. 1.2. And laitly, if a paucity of blood attends this parefis or 

 fome other caufe inducing a frequency of pulfe, the febris inirri- 

 tativa, or fever with weak pulfe, is produced. 



But on the contrary when the itomach has previoufly been 

 rendered torpid by defect of ftimulus, as by hunger, if food be 

 too haitily fupplied, not only great exertion of the ftomach it- 

 felf fucceeds, but fever with itrong pulfe is induced in confe- 

 quence ; that is, the heart and arteries are excited into more en- 

 ergetic action by the excefs of the power of aflbciation, which 

 catenates their motions with thofe of the ftomach. For the re- 

 dundancy of fenforial power of irritation, which was accu- 

 mulated during the inactivity of the ftomach, and is now called 

 into action by ftimulus, actuates that organ with kicreafed en- 

 ergy, and excites by thefe increafed motions the fenforial power 

 of aflbciation ; which has alfo been accumulated during the in- 

 activity of the heart and arteries ; and thus thefe organs alfo are 

 now excited into greater action. 



So after the fkin has been expofed fome hours to greater heat 

 than natural in the warm room, other parts as the membranes 

 of the noftrils, or of the lungs, or of the itomach, are liable to 

 become torpid from direct fympathy with it, when we come in- 

 to air of a moderate temperature ; whence catarrhs, coughs, 

 and fevers. But if this torpor be occafioned by defect of ftim- 

 lus, as after being expofed to frofty air, the accumulation of 

 fenforial power is exerted, and a glow of the fkin follows, with 

 increafed digeltion, full refpiration, and more vigorous circu- 

 lation. 



1 1. It may be afked, Why is there a great and conftant accu- 

 mulation of the fenforial power of aflbciation, owing to the tor- 

 por of the ftomach and heart and arteries, in continued fever 



with 



