CLASS II, 1. 6. 1, OF SENSATION. 



ORDO I. 



Increased Sensation' 



GENUS VI. 



With Fever consequent to the Production of new Vessels or Fluids. 

 SPECIES. 



1 . Febris sensitiva. Sensitive fever, when unmixed with either 

 irritative or inirritative fever, may be distinguished from either 

 of them by the less comparative diminution of muscular strength; 

 or in other words, from its being attended with less diminution 

 of the sensorial power of irritation. An example of unmixed 

 sensitive fever may generally be taken from the pulmonary con- 

 sumption; in this disease patients are seen to walk about with 

 ease, and to do all the common offices of life for weeks, and 

 even months, with a pulse of 120 strokes in a minute; while 

 in other fevers, whether irritated or inirritated, with a pulse of 

 this frequency, the patient generally lies upon the bed and 

 exerts no muscular efforts without difficulty. 



The cause uf this curious jjhf nnmpnon is thus to be under- 

 stood; in the sensitive fever a new sensorial power, viz. that of 

 sensation is superadded to that of irritation; which in other fevers 

 alone carries on the increased circulation. Whence the power 

 of irritation is not much more exhausted than in health; and 

 those muscular motions, which are produced in consequence of 

 it, as those which are exerted in keeping the body upright in 

 walking, riding, and in the performance of many customary ac- 

 tions, are little impaired. For an account of the irritated sensi- 

 tive fever, see Class II. 1. 2, I. ; for the inirritative sensitive 

 fever, Class II. 1. 3. 1. IV. 2. 4. 11. 



2. Febris a pure clauso. Fever from enclosed matter is gene- 

 rally of the irritated sensitive kind, and continues for many weeks, 

 and even months, after the abscess is formed; but is distinguish- 

 ed from the fever from aerated matter in open ulcers, because 

 there are seldom any night- sweats, or cplliquative diarrhoea in 

 this, as in the latter. The pulse is also harder, and requires oc- 

 casional venesection, and cathartics, to abate the inflammatory 

 fever; which is liable to increase again every three or four days, 

 till at length, unless the matter has an exit, it destroys the patient 

 In this fever the matter, not having been exposed to the air, has 

 not acquired oxygenation; in which a new acid, or some other 



vot. jr, i i 



