Sup. I. i. 3. THEORY OF FEVER. 447 



por of the heart and arteries ; and afterwards of an increafed 

 action of all thefe veflels, by what is termed direct fympathy. 



This fever, with ftrong pulfe without inflammation, or febris 

 irritativa, defcribed in Oafs I. 1. 1. 1. is frequently feen in ver- 

 nal intermittents, as the orgafm of the heart and arteries is then 

 occasioned by their previous ftate of torpor •, but more rarely I 

 believe exifts in the type of continued fever, except there be an 

 evident remiiTion, or approximation to a cold fit ; at which time 

 a new accumulation of the fenforial power of affociation is pro- 

 duced •, which afterwards actuates the heart and arteries with 

 unnatural vigour 5 or unlefs there be fome ftimulus perpetually 

 acting on the fyftem, fo as to induce an increafed fecretion of 

 fenforial power in the brain, as occurs in flight degrees of intoxi- 

 cation. Since without one or other of thefe circumftances in 

 continued fevers without inflammation, that is, without the ad- 

 ditional fenforial power of fenfation being introduced, it feems 

 difficult to account for the production of fo great a quantity of 

 fenforial power, as muft be neceflary to give perpetual increafe 

 of action to the whole fanguiferous fyftem. 



3. On the contrary, while the cutaneous capillaries with their 

 mucous and perfpirative glands acquire an increafed irritability, 

 as above, by the accumulation of that fenforial power during 

 their previous quiefcence, and thus conftitute the hot fit of fe- 

 ver ; if the heart and arteries do not acquire any increafe of af- 

 fociability, but continue in their ftate of torpor, another kind of 

 fimple fever is produced ; which is generally of the continued 

 kind, and is termed Febris inirritativa ; which confifts of a pre- 

 vious torpor of the capillaries of the (kin, and of the hea/t and 

 arteries by direct fympathy with them ; and afterwards of an 

 orgafm or increafed action of the capillaries of the flcin, with a 

 decreafed action, or continued torpor, of the heart and arteries 

 by reverfe fympathy with them. This orgafm of the cutaneous 

 capillaries, which appears by the blufh and heat of the (kin, is 

 at firft owing to the accumulation of the fenforial power of irri- 

 tation during their previous torpid ftate, as in the febris irritata 

 above defcribed ; but which is afterwards fupported or continue 

 ed by the reverfe fympathy of thefe capillaries with the torpid 

 ftate of the heart and arteries, as will be further explained in ar- 

 ticle 8. of this Supplement. 



4. The renovated activity of the capillaries commences as 

 foon or fooner than that of the heart and arteries after the cold 

 fit or irritative fever ; and is not owing to their bein£ forced 

 open by the blood being impelled into them mechanically, by 

 the renovated action of the heart and arteries ; for thefe capil- 

 laries of the fkin have greater mobility than the heart and ai 



ries; 



