DISEASES OF THE CIRCULATORY SYSTEM. 81 



embryonic filarise. It is possible that the embryos of the 

 filaria are obtained ordinarily from human faeces. 



Simpson records, in the ' Journal of Anatomy and Phy- 

 siology ' for May, 1875, an interesting congenital malfor- 

 mation in the dog — persistence of two pre-caval veins, 

 owing to Ouvier's left duct remaining pervious. 



At a recent meeting of the Pathological Society of 

 London, Mr. Harrison Oripps mentioned that he had seen 

 aneurysm in hounds, and that the celebrated greyhound 

 Master McGrath died from aneurysm of the aorta. 



Apart from the pathological conditions already noticed 

 as affecting the circulatory apparatus of the dog, doubtless 

 there are others which, aB being less frequent and less 

 marked, have not yet been recorded. They do not need 

 special notice from us here since their diagnosis, prognosis, 

 and treatment must be based on general surgical and 

 medical principles. 



