480 THEORY OF FEVER. Str. 1. 11. TV 



covering the head in bed in a short time relieved the pertina- 

 cious sickness of the patient, it must be observed that when the 

 action of the heart and arteries becomes weakened by the want 

 of the due stimulus of the proper quantity of oxygen in the 

 blood, an accumulation of the sensorial power of irritation oc- 

 curs in the fibres of the heart and arteries, which then is ex- 

 pended on those of the capillary glands, increasing their actions 

 and consequent secretions and heat. And then the stomach is 

 thrown into stronger action, both by the greater excitement of 

 its natural quantity of the sensorial power of association by the 

 increased actions of the capillaries, and also by some increase of 

 associability, as it had been previously a long time in a state of 

 torpor or less activity than natural, as evinced by its perpetual 

 sickness. 



In a manner somewhat similar to this, is the redness of the 

 skin produced in angry people by the superabundance of the un- 

 employed sensorial power of volition, as explained in Class IV, 

 2. 3. 5. Rubor ex ira. From hence we learn how, when 

 people in fevers with weak pulse, or in dropsies, become insane, 

 the abundance of the unemployed sensorial power of volition 

 increases the actions of the whole moving system, and cures 

 those diseases. 



7. As the orgasm of the capillaries in fevers with weak pulse 

 is immediately caused by the torpid actions of the heart and ar- 

 teries, as above explained, this supplies us with another indica- 

 tion of cure in such fevers, and that is to stimulate these organs. 

 This may probably be done by some kind of medicines, which 

 are known to pass into the blood unchanged in some of their 

 properties. It is possible that nitre, or its acid, may pass into the 

 blood and increase the colour of it, and thus increase its stimu- 

 lus, and the same may be supposed of other salts, neutral or me- 

 tallic? As rubia tinctoria, madder, colours the bones of young 

 animals, it must pass into the blood with its colouring matter 

 at least unchanged, and perhaps many other medicines may 

 likewise affect the blood, and thus act by stimulating the heart 

 and arteries, as well as by stimulating the stomach; which cir- 

 cumstance deserves further attention. 



Another way of immediately stimulating the heart and arte- 

 ries would be by transfusing new blood into them. It is possible 

 that any other fluid besides blood, as chyle, or milk, or water, 

 could, if managed with great art, be introduced safely or advan- 

 tageously into the vein of a living animal? 



A third method of exciting the heart and arteries immediately 

 is by increasing the natural stimulus of the blood, and is well 

 worthy experiment in all fevers with weak pulse; and that con- 



