PATHOLOGY, 29 



high, the vefsels of the fetlock, or pastern joint, 

 take on the action of secreting horny substance, 

 .similar to those of the feet. 



It seems necefsary to the formation of pus, that 

 the action of the vefsels be increased beyond that 

 producing adhesion ; but still this increase of ac- 

 tion should go no further than a certain degree : 

 for we find, that if this action is carried to too 

 great a degree, suppuration will not take place. It 

 seems to be the intention of nature, in forming 

 pus, to throw off some extraneous matter ; pulsa- 

 tion is felt, and the pain is more violent in the part 

 during the formation of pus. The constitutional 

 symptoms are likewise increased, the pulse is hard 

 and more frequent, and the fever augmented ; the 

 cellular part into which pus is thrown being taken 

 up by the absorbents, or being broken down by 

 the fluid which is thrown out, becomes mixed with 

 it. The coagulable lymph sometimes remaining 

 for a considerable time after the matter has been 

 evacuated, before it is absorbed, hence that indu- 

 ration and thicknefs of parts from which pas 

 has been evacuated. Alter pus is completely 

 formed, the pain and swelling subside, as do also 

 the constitutional symptoms. 



fKE period at which suppuration takes place 



