444 DISEASES OF IRRITATION. SECT. XXXII. 10. 



the ftimulus of heat, and thofe which conftitute the 

 arteries and glands by the fiimulus of the blood, be- 

 come for a time quiefcent, from the want of their ap- 

 propriated ftimuli, or by their aflbciations with other 

 quiefcent parts of the fyftem ; a greater accumula- 

 tion of fenforial power is acquired during their qui- 

 efcence, and a greater or quicker exhauftion is pro- 

 duced during their increafed aclion. 



This accumulation of fenforial power from defi- 

 cient action, if it happens to the ilomach from want 

 of food, occafions the pain of hunger ; if it happens 

 to the veffels of the fkin from want of heat, it oc- 

 cafions the pain of cold ; and if to the arterial 

 fyftem from the want of its adapted ftimuli, many 

 difagreeable fenfations are occafioned, fuch as are 

 experienced in the cold fits of intermittent fevers, 

 and are as various, as there are glands or membranes 

 in the fyftem, and are generally termed univerfai 

 uneafinefs. 



When the quiefcence of the arterial fyftem is not 

 owing to defed of ftimulus as above, but to the de- 

 fective quantity of fenforial power, as in the com- 

 mencement of nervous fever, or irritative fever with 

 weak pulfe, a great torpor of this fyftem is quickly 

 induced ; becaufe both the irritation from the fti- 

 mulus of the blood, and the aflbciation of the vaf- 

 cular motions with each other, continue to excite 

 the arteries into action, and thence quickly exhauft 

 the ill-fupplied vafcular mufcles ; for to reft is death ; 

 and therefore thofe vafcular mufcles continue to pro- 

 ceed, though with feebler adtion, to the extreme of 

 wearinefs or faintnefs ; while nothing fimilar to this 

 affects the locomotive mufcies, whofe addons are ge- 

 nerally caufed by volition, and not much fubjecl: 

 either to irritation or to other kinds of aflbciations 

 befides the voluntary ones, except indeed when they 

 are excited by the lafh of flavery. 



In 



