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EXHALENT SYSTEM. 



/?. They depend on deranged organic sensibility, a 

 change of relation between it and the blood. 



Q. How is this organic sensibility deranged in the ex- 

 halents? 



#. By the direct impression of irritation, by sympa- 

 thetic power, and in an unknown way. 



Q. Give an instance of direct irritation of the exha- 

 lents. 



\ft. You see it in the action of cold on the skin. 



Q. Give an example of sympathetic impression on the 

 exhalents. 



t/2. An instance is found in, the sweating which is in- 

 duced by pain in the fibrous and muscular tissues. 



Q. What exhalents are exclusively exposed to direct 

 stimulation? 



#. The exhalents of the skin and mucous membranes; 

 besides this exposure to direct irritation, they are liable 

 to the sympathetic derangements; and hence they are more 

 frequently diseased than any other exhalents. 



Q. Are all the exhalations simultaneously diminished 

 or increased? 



#. In fever they are all diminished. As a general rule, 

 when one exhalation is increased another is diminished; 

 as you see the hectic sweats in phthisis diminished by the 

 dropsical infiltrations which come on in the last stages of 

 the disease. 



Q. How are morbid exhalations divided? 



#. Into those attended with exalted vital forces, and 

 those where these forces are diminished. 



Q. What are preternatural exhalations? 



*fl. Any discharges from the exhalents which differ 

 from the natural. 



