124 BLOOD, HOW CLEANSED. [BOOK I. 



changed in the lungs, as we have just said, is still 

 found to contain certain particles or properties, 

 which would render it unfit for the purposes to 

 which it is to he applied, or those particles are re- 

 quired to effect certain purposes elsewhere in the 

 system* Accordingly, the major part passes into 

 the liver, there to be refined of its bitterness ; whilst 

 a portion is attracted to the kidneys, where it leaves 

 its saline qualities, that pass off by staling, as the 

 former is voided by dunging. See ts Liver," at 

 page 146 ; and Secretions, in the Index. 



41. These purposes, however, are not always 

 effected alike regularly, from several causes. Fre- 

 quently, the blood comes to those organs in a state 

 too vitiated for their utmost activity to cleanse ; 

 sometimes a diseased state of the blood, at others, 

 languor of the parts, indispose them to the per- 

 formance of their functions, and the blood is suf- 

 fered to circulate, filled with humours that war with 

 the constitution, and form what is termed "con- 

 stitutional disease," or predispose him to receive 

 disorders of varied malignity, according to circum- 

 stances. We shall come to advert to this point 

 when, shortly, the liver and kidneys claim our at- 

 tention ; but, the chiefest cause of disorders incident 

 to the animal by reason of defective liver, is the 

 great exertions he is put to, and the consequent 

 rapidity of the circulation, whereby the blood is 

 propelled through it with tremendous velocity : it 

 then acquires inflammation, and becomes ulcerated 

 (see section 39.) ; a disposition which must be in- 



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