EXHALENT SYSTEM. 157 



General Arrangement of the Exhalents. 



Q. How are the exhalents divided? 



*fl. Into three orders; those terminating on the outlets 

 at the cutaneous and mucous surfaces, those which termi- 

 nate on the internal organs, and those which convey the 

 nutritive matter. 



Properties and Functions of the Exhalent System. 



Q. What are the properties of the exhalents? 



Jl. Destitute of animal sensibility and animal contrac- 

 tility, their vital properties on which their functions de- 

 pend are organic sensibility and insensible organic con- 

 tractility. 



Q. How is it that the exhalents of the different organs 

 and surfaces pour out uniformly their appropriate fluids? 



#. As the blood whence the exhaled fluids are derived, 

 is in all organs the same, the power by which each organ 

 separates its own fluid must result from peculiarity in the 

 organic sensibility and contractility of these organs. 



Q. Will you be more explicit on this subject? 



t/#. It is either because the blood whence the exhalation 

 proceeds is specifically distinct in the various surfaces, or 

 the vital properties of the solids so differ as to produce the 

 various exhalations. There is nothing concerned in the 

 process but the blood and the solids which it stimulates. 



Q. To what has exhalation been ascribed ? 



#. To a distillation through the coats of the arteries. 



Q. How do you account for morbid or altered exhala- 

 tions? 



