CLASS IV. 2. 1. 19. OF ASSOCIATION. 411 



of wine. A blifter. Half a grain of opium twice a day. So- 

 lution of arfenic ? 



19. Febris inirritativa. Inirritative fever defcribed in Clafs 

 I. 2. i. i. belongs to this place, as it confifts of difordered trains 

 and tribes of aflbciated irritative motions, with leflened actions 

 of the aflbciated organs. In this fever the pulfations of the 

 heart and arteries are weakened or leflened, not only in the 

 cold paroxyfm, as in the irritative fever, but alfo in the 

 hot paroxyfm. The capillary arteries or glands have their ac- 

 tions neverthelefs increased after the firft cold fit, as appears by 

 the greater production of heat, and the glow of arterial blood in 

 the cutaneous veflels ; and laftly, the actton of the fhomach is 

 much impaired or deftroyed, as appears by the total want of ap- 

 petite to folid food. Whence it would feem, that the torpid 

 motions of the ftomach, whatever may occafion them, are a 

 very frequent caufe of continued fever with weak pulfe ; and 

 that thefe torpid motions of the ftomach do not fufficiently ex- 

 cite the fenforial power of aflbciation, which contributes in 

 health to actuate the heart and arteries along with the irritation 

 produced by the ftimulus of the blood ; and hence the actions 

 of thefe organs are weaker. And laftly, that the accumulation 

 the fenforial power of aflbciation, which ought to be expended 

 on the motions of the heart and arteries, becomes now exerted 

 on the cutaneous and pulmonary capillaries. See Supplement 

 I. 8. and Sea. XXXV. i. i. and XXXIII. 2. 10. 



I have dwelt longer on the vertiginous difeafes in this genus, 

 both becaufe of their great intricacy, and becaufe they feem to 

 open a road to the knowledge of fever, which confifts of aflbciat- 

 ed trains and tribes of irritative or fenfitive motions, which are 

 fometimes mixed with the vertiginous ones, and fometimes fep- 

 arate from them. 



ORDO 



