AND ANIMAL LIFE. 19 



kind proportionate to the cause and the state 

 of constitution. In the congestive or real 

 typhoid fever, the inflammatory coat is seldom 

 present ; nor should we expect this, if we con- 

 sider the collapsed or cadaverous condition of 

 the body in this disease : the organic and 

 animal functions are universally deranged, 

 the liver and the spleen, for example, are en- 

 gorged ; vomiting, headache, delirium, the 

 small, frequent, and weak pulse, the diminution 

 of temperature, the great coldness and almost 

 insensibility of the extremities, and, lastly, the 

 petechiae, maculae, or vibices, express more elo- 

 quently than words can describe, the impover- 

 ished properties of the blood, and the cause to 

 which these changes must be attributed, viz. the 

 congested state of the lungs and internal organs, 

 on which account the blood is imperfectly oxy- 

 genated, because the inspired air has to act on a 

 quantity much greater than circulates in the pul- 

 monary cells, during inflammatory affections, 

 moderate exercise, or health. 



XXVII. As I purpose, in a short time, to 

 publish a work on Fever and Inflammation, I 

 shall not at present pursue farther an investiga- 

 tion into the nature and origin of the above phe- 

 nomena. From the view which is developed, it 

 is clear that the state of the blood, in disease, 

 may mislead very much in the treatment, unless 

 we be acquainted with those causes on which its 



B 2 



