26 



BOVINE PATHOLOGY. 



Suppuration is tliat result of inflammation which is 

 manifested by the production of the fluid which is familiar 

 to us as pus. It results especially when inflammation 

 runs high in a very vascular organ, but may occur under 

 different circumstances. Pus consists of highly active 

 corpuscles, which closely resemble white blood-corpuscles, 

 and float in serous fluid — Liquor Puris. It has a sp. gr. 

 of 1030. This fluid is simply the effused material with a 

 large number of cells resulting from proliferation of 

 tissue elements, and migration of leucocytes. This result 





/P 





Fig 3. — A. Pus corpuscles from an abscess ; (a) the same after treatment 

 with acetic acid. B. Mucus corpuscles from the Schneiderian mem- 

 brane J (a) after a drop of acetic acid has been added. C. Mucus 

 corpuscles speckled with pigment granules from a case of chronic 

 irritation of lining membrane of the larynx. After Hurley and Brown. 



of inflammation is most frequent when a natural moisture 

 of the part and capability of yielding to swelling are 

 properties of the diseased organ or tissue. While exuda- 

 tion most frequently occurs on serous membranes, the 

 mucous surfaces generally when inflamed produce pus ; but 

 pus may be produced by a serous membrane and plastic 

 deposits by a mucous membrane, such as that of the bowel 

 or trachea. When suppuration assumes a local character. 



