DISEASES OF HEART, BLOOD VESSELS, AND LYMPHATICS. 83 



is taken out it is found that the wound has not healed. The blood 

 becomes coagulated in the vessel. In inflammation of the jugular the 

 coagulation extends from the wound upward to the first large branch. 

 Abscesses may form along the course of the vein. The inflammation 

 is followed by obliteration of that part in which coagulation exists. 

 This is of small import, as cattle have an accessory jugular vein which 

 gradually enlarges and accommodates itself to the increased quantity 

 of blood it must carry. 



Treatment. — The treatment for inflammation of the vein is to clip 

 the hair from along the course of the affected vessel and apply a 

 blister, the cerate of cantharides. Abscesses should be opened as 

 soon as they form, because there is a possibility of the pus getting 

 into the circulation. 



In the operation of bleeding the instruments should be clean and 

 free from rust. If the skin is not sufficiently opened, or when closing 

 the wound the skin is drawn out too much, blood may accumulate in 

 the tissue, and if it does it should be removed by pressing absorbent 

 cotton or a sponge on the part. Care should also be used in opening 

 the vein, so that the instrument does not pass entirely through both 

 sides of the vein and open the artery beneath it. (See "Bleeding, or 

 Blood-letting," p. 290.) 



