AKTEKITIS. 581 



May not causes as trivial as tliis operate in producing fatal 

 results in the lower animals ? 



I think that in no case of swelled legs, enlarged glands, 

 subacute inflammation, or hardening over the course of the 

 lymphatics or superficial veins, should the possibility of a fatal 

 termination by embolism to the right side of the heart be over- 

 Jooked, or the possible supervention of suppurative phlebitis. 

 Professor Gamgee, in his Domestic Animals in Health and 

 Disease, mentions a case of embolism supervening upon the 

 insertion of a seton for the cure of bone-spavin. 



In farcy — a disease where the lymphatics are inflamed — 1 

 liave invariably discovered coagula in the splenic vessels, these 

 having been originally formed in the veins closely connected 

 with the inflamed lymphatics, conveyed to the heart in small 

 detached particles by the returning stream of blood, propelled 

 from thence into the arterial system, and deposited in the 

 capillaries of the spleen and other organs. In epizootic 

 cellulitis — a disease characterised by diffuse inflammation of 

 areolar tissue — death frequently occurs, when the animal is to 

 all appearance recovering, from embolism to the right side 

 of the heart ; whilst in other instances of the same disease the 

 thrombi have been propelled from the heart to the cerebral 

 arteries, and death has resulted from coma, or from a slow 

 degenerative disease of the brain, ensuing from deficient blood 

 supply. 



ANEUEISM, 

 A pulsating tumour containing blood, and communicating with 

 the interior of an artery. 



Aneurisms are divided into true and false. " A true aneu- 

 rism is that which is due to disease of the arterial texture, 

 whether the diseased condition be a degeneration and dilatation 

 of all the coats of the vessel, or an ulceration of one or more of 

 them, leading to dilatation of the external fibrous coat. 



" A false aneurism is nothing more or less than a wounded 

 artery, the blood, prevented from escaping externally, becoming 

 coagulated in the areolar tissue, which becomes condensed, and 

 forms a sort of cyst, though generally a very imperfect one. 

 as in some cases the force of the blood-current dissects the 

 textures widely. The wound in the artery remains open, and 



