98 DISEASES OF CATTLE. 



kept in wet, cold situations. It seems to arise from debility of the circulation and 

 relaxation or \vant of tone in the coats of the vessels. The treatment for dilatation 

 without inflammation: Better food, warmth, and comfort; tonics and pressure by 

 bandages; and, in addition, when suppuration is established, the abscesses are to be 

 opened and blisters applied, but no pressure. 



AIR IN TEINS. 



Owing to the suction action in the chest (referred to in the descrip- 

 tion of the blood-vessels), when a large vein is opened in the vicinity of 

 the chest air may be sucked in, which, if in great quantity, will cause 

 death, as the air bubbles are carried by the blood to the capillaries of 

 the lungs, where they impede the circulation by occluding the small 

 vessels. 



