STROJSTG-YLUS ARMATUS. 
375 
available life history of the S. armatis, the development of the 
worms. From my observation, it is not necessary that the 
animal should have been in pasture in order to harbor this 
worm, or at least within a few years. I am of the opinion 
that in the larger majority of deaths from colic, there will be 
found in the blood vessels evidence of, or the parasite itself. 
It is not to the exceptional cases that I desire to call your 
ittention, but to those of every-day occurrence. 
The following cases may be of interest at this point as 
giving direct evidence, in my opinion, that the worm in 
question does produce lesions that are a cause of embolism. 
That the parasite is a cause of altered nutrition, and in many 
;ases the cause of death. 
I will also cite several cases from the pen of Dr. Parker, 
vhich, I think, sustains the opinion taken on this subject: 
1. History. Brown gelding, ten years, one thousand pounds, 
;ame owner for two years, never sick before with present 
)wner. 
Found the animal with abdominal pain, sharp and inter- 
nittent. Urine free, fasces scant. Looks round to the flank 
'ontinually. Eructation of gas from stomach. Treatment 
vould relieve for a while, but after twelve hours sickness he 
lied. 
Post-Mortem —twelve hours after death. Bloated ; dark- 
olored serum escapes from the abdomen when opened. The 
arge intestines normal in color, but distended with gas; 
mall intestine black for a distance of about four feet, due to 
twist; rest of the viscera normal. On opening the anterior 
aesenteric artery, found a thickening of the intestine, with a 
lew growth, ragged, in which were found worms. 
2. History .—Brown gelding, 6 years, one thousand four 
undred pounds. This animal has been subject to fainting 
pells during the last four months. He would fall down, lay 
few minutes, get up apparently all right, and resume his 
rork for several weeks or days. 
This day he went to work apparently well, but soon man- 
ested pain, which gradually increased, with periods of ease, 
ntil noon, when death ensued. 
