98 OF STIMULUS AND EXERTION. SECT. XII. 6. 



that which he defigned, as cold weather for hot 

 weather, fummer for winter. 



6. A certain quantity of (limulus, lefs than that 

 above mentioned, is/fucceeded by paralyfis, firft of 

 the voluntary and feniitive motions, and after- 

 wards of thofe of irritation and of affociation, 

 which conilitutes death. 



Vf. Cure of increafed Exertion. 



i. The cure, which nature has provided for the 

 increafed exertion of any part of the fyftem, con- 

 lifts in the confequent expenditure of the fenforial 

 power. But as a greater torpor follows this ex- 

 hauftion of fenforial power, as explained in the. 

 next paragraph, and a greater exertion fucceeds 

 this torpor, the conftitution frequently finks under 

 thefe increafing librations -between exertion and 

 quiefcence ; till at length complete quiefcence, that 

 is, death, clofes the fcene. 



For, during the great exertion of the fyftem in 

 the hot fit of fever, an increafe of ftimulus is pro- 

 duced from the greater momentum of the blood, 

 the greater diftention of the heart and arteries, and 

 the increafed production of heat, by the violent 

 aclions of the fyftem occafioned by this augmenta- 

 tion of ftimulus, the fenforial power becomes di- 

 minifhed in a few hours much beneath its natural 

 quantity, the veflels at length ceafe to obey even 

 thefe great degrees of ftimulus, as fliewn in Sect. 

 XL. 9. i. and a torpor of the whole or of a part of 

 the fyftem enfues. 



Now as this fecond cold fit commences with a 

 greater deficiency of fenforial power, it is alfo at- 

 tended with a greater deficiency of ftimulus than in 

 the preceding cold fit, that is, with lefs momentum 

 of blood, lefs diftention of the heart. On this ac- 

 count the fecond cold fit becomes more violent and 



of 



