STRONGYLUS ARMATUS. 
387 
etanus, the other was killed on account of malformation, 
vith aneurisms of anterior mesenteric in both, and living 
clerostomes. Using these cases for an analogy, he thinks 
hat the theory of verminous aneurisms causing colic should 
>e more carefully looked into. 
Mr, M. Laquerriere, in his article on colic, Veterinary 
Review, Vol. IX, page 222, says—“ As to the predisposition 
Toduced by a diseased condition of the great mesenteric artery 
ineurism), upon which Zundel places so much weight, we at- 
.ich but little importance to it. But, on the contrary, we 
ecognize the predisposition accompanying advanced age.” 
Prof. F. Smith, Army Vet. School, Aldershot, has a very 
iteresting article in Veterinary Journal , for July, 1892,011 “ [11- 
?stinal Obstruction in the Horse,” and I fail to find that he 
lakes mention of Strongylus armatus as a cause for the same, 
le does say that “ The rapidity of death depends entirely 
pon whether the blood supply to the bowel is partly or com- 
letely cut off, viz., a partial or complete twist.” I am of the 
pinion that the twist to which he attaches so much import- 
ice is a result due to enteralgia, and that due to altered 
itrition of the part. It is a fact that this parasite is not a 
ranger, but is readily found if looked for, and is a cause of 
irombosis and embolism. 
Mr. Hunting, in discussing Prof. Smith’s paper, “ held that 
ie impacted food was the cause of the spasm, or the pain, and 
•at the proper thing was to remove the cause, even if the}' 
flicted a little more pain.” Does not the establishment of 
illateral circulation to the afflicted parts cause a return of 
>rmal state, and pain then cease, allowing that it is due to an 
nbolism ? Who can make a positive diagnosis of this condi- 
in during life ? 
Mr. H. G. Rogers said he was rather skeptical as to the 
ondition called twist, for the report came from Knacker in 
ndominal cases—“ T wist, sir ;” and this is similar to the report 
bm this side of ruptured diaphragm. He thought that slug- 
sh liver and defective teeth were the causes of intestinal ob- 
sruction. . 
Prof. Macqueen thought there was another form of ob- 
