498 Veterinary Medicine. 



rism with the object of inducing coagulation. The introduc- 

 tion of coils of fine wire through a hypodermic needle with the 

 same object in view. In both horse and dog the persistent com- 

 pression with the finger, seconded as it is by the plasticity of the 

 blood has succeeded in checking the flow from large arterial 

 orifices, and offers great encouragement in the application of 

 this measure to aneurisms. The injection into the sac, of tincture 

 of chloride of iron, with firm compression to prevent motion of the 

 blood, is another available resort. 



ARTERIO-SCIvEROSIS. 



Fibrous thickening of the arterial coats and calcification are 

 well known lesions in the posterior aorta, particularly of the horse. 

 Commencing in congestion or degeneration which lessens the re- 

 sistance of the vascular walls, the condition tends to dilatation, and 

 if this is checked by compensatory thickening, the condition of 

 sclerosis is induced. The combination of a slight fusiform dilata- 

 tion and fibrous or calcareous sclerosis is well known in the pos- 

 terior aorta of the horse. Unless it advances to marked aneuris- 

 mal dilatation, the condition is not often recognized. If diagnosed, 

 rest and quieting of the circulation are especially indicated. 

 Should it occur in other parts of the body the symptoms would cor- 

 respond to the organ invaded. 



