5d THEORY OF FEVER. Sup. I. 16. 6. 



pofed to cold and damp air. In that cafe the link in catenation, 

 that is, the firft of the affociate train, is rendered torpid by de- 

 fect of excitement of its ufual quantity of the fenforial power of 

 afTociation, and from there being no accumulation of the fenfori- 

 al power of irritation to increafe its afibciability, and thus to con- 

 tribute to actuate it by overbalancing the defect of the excite- 

 ment of its afTociation. 



Thus on riding long and flowly on a cold and damp day, 

 the exhalation of the vapour, which is impinged on the fkin, as 

 the traveller proceeds, carries away his warmth fader, than it is 

 generated within the fyftem ; and thus the capillaries of the fkin 

 have their actions fo much impaired after a time, that no accu- 

 mulation of the fenforiai power of irritation occurs ; and then 

 the ftomach, the motions of which are catenated with thofe of 

 the capillaries, ceafes to act from the deficient excitement of the 

 power of afTociation ; and indigeftion and flatulency fucceed, 

 inftead of the increafed digeftion and hunger, which occur, 

 when the cutaneous capillaries are expofed to a lefs degree of 

 cold, and for a fhorter time. In which latter fit nation the accu- 

 mulation of the fenforiai power of irritation increafes by its fu-. 

 perabundance the affoeiability of the fibres of the ftomach, fo 

 as to overbalance the defect of the excitement of their afTocia- 

 tion. 



6. The ftomach is affected fecondarily in fevers with flrong 

 pulfe, as in thofe with weak pulfe it is affected primarily. To 

 illuftrate this doctrine I fhall relate the following cafe of Mr. 



Y— . He was a young man rather intemperate in the ufe 



of wine or beer, and was feized with a cold fit, and with a con- 

 fequent hot one with flrong pulfe ; on examining his hypochon- 

 drium an oblong tumour was diflinctly felt on the left fide of 

 the ftomach, which extended fix or eight inches downward, and 

 was believed to be a tumour of the fpleen, which thus occafioned 

 by its torpor the cold fit and confequent hot fit of fever with 

 flrong pulfe. This fever continued, though with remiffions, 

 for two or three weeks ; and the patient repeatedly loft blood, 

 ufed cathartics with calomei and fenna,and had frequent antimo- 

 nial and faline medicines. And after he was much weakened 

 by evacuations, the pcruvian bark and fmall doles of fleel re- 

 moved the fever, but the tumour remained many years during 

 the remainder of his life. 



in this cafe the tumour of the fpleen was occafioned by the 

 torpor of the abforbent vefiels ; while the fecerning vefiels con- 

 tinued fomewhat longer to pour their fluids into the cells of it. 

 Then the inactivity of this vifcus affected the whole fyftem with 

 torpor by the deficient excitement of the fenforiai power of ailb- 

 ciation, 



