SUP. I. 12. 7. THEORY OF FEVER. 483 



chilness of some people after dinner; and contrariwise by the 

 digestion being strengthened, when the skin is exposed to cold 

 air for a short time; as mentioned in Class IV. 1. 1. 4. and IV. 

 2. 1. 1. and from the heat and glow on the skin, which attends 

 the action of vomiting; for though when sickness first commences, 

 the skin is pale and cold, as it then partakes of. the general tor- 

 por, which induces the sickness; yet after the vomiting has con- 

 tinued some minutes, so that an accumulation of sensorial power 

 exists in the capillaries of the stomach, and of the skin, owing 

 to their diminished action; a glow of the skin succeeds, with 

 sweat, as well as with increased absorption. 



7. Nevertheless in some circumstances the stomach and the 

 heart and arteries seem to act by direct sympathy with the cu- 

 taneous capillaries, as in the flushing of the face and glow of the 

 skin of some people after dinner; and as in fevers of strong 

 pulse. In these cases there appears to be an increased produc- 

 tion of sensorial power, either of sensation, as in the blush of 

 shame; or of volition, as in the blush of anger; or of irritation, 

 as in the flushed face, after dinner above mentioned. 



This increased action of the capillaries of the skin along with 

 the increased actions of the stomach and heart is perhaps to be 

 esteemed asynchronous increase of action, rather than a sympathy 

 between those organs. Thus the flushing of the face after din- 

 ner may be owing to the secretion of sensorial power in the brain 

 being increased by the association of that organ with the stomach 

 in a greater proportion than the increased expenditure of it, or 

 may be owing also to the stimulus of new chyle received into the 

 blood. 



8. When the stomach and the heart and arteries are rendered 

 torpid in fevers, not only the cutaneous, cellular, and pulmonary 

 absorbents are excited to act with greater energy, but also their 

 correspondent capillaries and secerning vessels, or glands, especi- 

 ally perhaps those of the skin, are induced into more energetic 

 action. Whence greater heat, a greater secretion of perspirable 

 matter, and of mucus; and a greater absorption of them both, 

 and of aerial moisture. These reverse sympathies coincide with 

 other animal facts, as in eruption of small-pox on the face and 

 neck, the feet become cold, while the face and neck are much 

 flushed; and in the hemiplegia, when one arm and leg become 

 disobedient to volition, the patient is perpetually moving the 

 other. Which are well accounted for by the accumulation of 

 sensorial power, in one part of an associated series of actions, 

 when less of it is expended by another part of it; and by a defi- 

 ciency of sensorial power in the second link of association, when 

 too much of it is expended by the first. 



