?s II. x.- 6. i; OF SENSATION. 



ORDO I. 



Increafed Senfation* 



GENUS VI. 



With Fever confequent to the Production of new Veffels or Fluids 



SPECIES. 



I . Febrisfenfttiva. Senfitive fever, when unmixed with either 

 irritative or inirritative fever, may be diftinguifhed from either 

 of them by the lefs comparative diminution of mufcular ftrengthj 

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

 of the fenforial power of irritation. An example of unmixed 

 fgnfitive fever may generally be taken from the pulmonary con- 

 fumption ; in this difeafe patients are feen to walk about with 

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

 months, with a pulfe of 1 20 ftrokes in a minute ; while in other 

 fevers, whether irritated or inirritated, with a pulfe of this fre- 

 quency, the patient generally lies upon the bed and exerts no 

 mufcular efforts without difficulty. 



The caufe of this curious phenomenon is thus to be under- 

 ftood ; in the fenfitive fever a new fenforial power, viz. that of 

 fenfation, is fuperaddedto that of irritation ; which in other fevers 

 alone carries on the increafed circulation. Whence the power 

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

 thofe mufcular motions, which are produced in confequence of 

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

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

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

 tive fever, fee Clafs II. i. 2. i. ; for the inirritated fenfitive fever, 

 ClafsII. i. 3. i. IV. 2. 4. ii. 



2. Febris a pure claiifb. Fever from enclofed matter is gener- 

 ally of the irritated fenfitive kind, and continues for many weeks, 

 and even months, after the abfcefs is formed ; but is didinguifh- 

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

 there are feldom any night-fweats, or colliquative diarrhcea in 

 this, as in the latter. The pulfe is alfo harder, and requires oo 

 cafional venefetlion, and cathartics, to abate the inflammatory 

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

 till at length, unlefs the matter has an exit, it deflroys the patient. 

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

 riot acquired oxygenation ; in which a new acid, or lome other 



VOL. II. H H rioxiout 



