Diseases of Blood-vessels and Lymphatics 119 



(horse, ox and sheep, linseed oil or Glauber salts ; pig and 

 dog, castor oil,) and afterward diuretics and sedatives. 



The persistence of the plugging and lameness must be 

 met by patience, the animal being turned iato a small 

 yard or paddock where he can take gentle exercise and 

 live well, until the collateral vessels have had time to en- 

 large and carry on the circulation. Three or four months 

 will sometimes secure a tolerable recovery. 



DILATATIONS OP THE AKTEBIES. ANEUEISMS. 



These are mostly seen in the horse among domestic an- 

 imals, and even in liim much more rarely than in man. 

 The causes are generally severe strains in the vicinity of 

 an artery, or over-stretchiug of the vessel itself. They 

 are also common in the mesenteric arteries of horses from 

 the presence of immature worms ( Sderostomnm EquluHia) 

 in the circulating blood. Injuries to the walls of the ves- 

 sels are much less liable to be followed by anevirism than 

 in man, because of the greater plasticity of the blood, ,iud 

 the speedy formation of a covering of coagulable lymph. 

 They are soft, fluctuating, pulsating tumors, effaceable by 

 pressure, but reappearing at once. Being usually situated 

 internally, treatment can rarely be adopted. But when 

 superficial, compression has been most successful alike ia 

 the horse and dog. It is needless to recount the many 

 other modes of treatment for such an unusual affection. 



DISEASES OF VEIXS. 

 WOUNDa OF VEINS. 



These give rise to the escape of a dark red blood in a 

 steady stream. This-is commonly to be arrested by pin- 

 uLag up the lips of the wound evenly, taking hold of each 

 by one-eighth inch and tying them together by a little 

 tow, twisted round the two ends of the pin in the form of 

 the figure 8. Or several pins may be placed near each 

 other and the tow tAvisted round them and from pin to pin 

 in the same manner. Veins may be tied but this risks the 



