SUP. 1. 8. 12. THEORY OP FEVER. 471 



with weak pulse; which is exerted on the cutaneous and pul- 

 monary capillaries, so as to excite them into increased action 

 for many weeks, and yet no such exuberance of sensorial power 

 produces fever in winter-sleeping animals, or in chlorosis, or 

 apepsia, or hysteria? 



In winter-sleeping animals I suppose the whole nervous sys- 

 tem is torpid, or paralysed, as in the sleep of frozen people; 

 and that the stomach is torpid in consequence of the inactivity 

 or quiescence of the brain; and that all other parts of the body, 

 and the cutaneous capillaries with the rest, labour under a simi- 

 lar torpor. 



In chlorosis, I imagine, the actions of the heart and arteries, 

 as well as those of the cutaneous and pulmonary capillaries, suf- 

 fer along with those of the stomach from the deficient stimulus 

 of the pale blood; and that though the liver is probably the seat 

 of the original torpor in this disease, "With which all other parts 

 sympathize from defect of the excitation of the sensorial power of 

 association; yet as this torpor occurs in so small a degree as not 

 to excite a shuddering or cold fit, no observable consequences are 

 in general occasioned by the consequent accumulation of senso- 

 rial power. Sometimes indeed in chlorosis there does occur 

 a frequent pulse and hot skin; in which circumstances I sup- 

 pose the heart and arteries are become in some degree torpid by 

 direct sympathy with the torpid liver; and that hence not only 

 the pulse becomes frequent, but the capillaries of the skin act 

 more violently by reverse sympathy with the heart and arteries, 

 owing to the accumulation of the sensorial power of association 

 in them during their torpid state, as occurs in irritative fever. 

 See Article 11. of this Supplement. 



In apepsia chronica the actions of the stomach are not so far 

 impaired or destroyed as totally to prevent the excitation of the 

 sensorial power of association, which therefore contributes some- 

 thing towards the actions of the heart and arteries, though less 

 than natural, as a weak pulse always I believe attends this dis- 

 ease. 



There is a torpor of the stomach, and of the upper part of 

 the alimentary canal in hysteria, as is evident from the retro- 

 grade actions of the duodenum, stomach, and oesophagus, which 

 constitute the globus hystericus, or sensation of a globe rising in- 

 to the throat. But as these retrograde actions are less than those 

 which induce sickness or vomiting, and are not occasioned by 

 previous exhaustion of the sensorial power of irritation, they do 

 not so totally prevent the excitement of the sensorial power of 

 association, as to lessen the motion of the heart and arteries so 

 much as to induce fever; yet in this case, as in apepsia, and in 



