CHAPTER XXXIIL 



DISEASES OF THE ARTEHIES AND LYMPHATICS. 



DISEASES OF THE ARTERIES — ARTERITIS — EMBOLISM — ANEURISM — 

 TRUE ANEURISM — THE DISSECTING ANEURISM FALSE ANEU- 

 RISM ANEURISMAL VARIX VARICOSE ANEURISM DEGENERA- 

 TION OF THE ARTERIAL COATS — CALCAREOUS, CARTILAGINOUS, 

 AND FATTY DEGENERATION INJURIES TO ARTERIES INFLAM- 

 MATION OF THE ABSORBENTS. 



AKTEEITIS. 



Inflammation of the arteries is a rare affection in the lower 

 animals. Cases of inflammation of the iliac arteries are, however, 

 recorded, and I have seen instances of it. There is a fine speci- 

 men in the College Museum, and the history of the case from 

 which it was obtained is contained in the following letter : — 



Letter from the late Professor Barloiv to Dr. Gairdner. 



" 1 PiLRiG Street, 12th Decemler 1855. 



" My Dear Sir — I have recently met with a few instances 

 in which arteries of considerable size have been almost entirely 

 plugged up with fibrinous clots, firmly adherent to their walls. 

 In these cases, during life, there was sometimes visible, but 

 unexplained, atrophy of certain muscles in regions specially 

 supplied by such vessels ; and sometimes, when a main trunk, 

 such as the aorta posterior, became thus plugged, there was 

 palsy of the hind parts (of course, I speak of the horse). At 

 first I fancied these things to possess no material interest, and 

 did not preserve the vessels. However, this day week, a pony 

 greatly disabled behind, but not completely paralytic, was 

 brought for dissection. I found a large plug of adherent fibrine 

 in the aorta post., just where this vessel divides into two iliacs 

 on each side. (In the horse, you will remember, there is no 



