34 
STRONGYLUS PARADOXUS IN THE PIG. 
colorations, and around the margins of the lungs in places 
small consolidations as in broken wind in horses. 
Sept. 13th, 1879—Mr. N-, of this place, had two pigs, 
one of which had gastric fever. A draught was adminis¬ 
tered, which was followed by another, but rheumatism 
having supervened, it was thought advisable to slaughter 
the animal. The owner afterwards told me that his wife, 
in preparing the fry, cut the lungs into several pieces, 
when large quantities of long threadworms (strongyles) 
made their appearance. 
October 30th, 1879—Mr. B---, also of this place, came to 
my residence and informed me that, as one of his pigs had 
had a fit that morning, he had slaughtered the other three, 
but that, for fear of consequences, he wished me to examine 
it, as he said it was “ fired ” over the ribs. I found the 
same pink discoloration as in the first case in places on 
the lungs, accompanied with interlobular emphysema and 
consolidation of the lungs, more especially along their free 
margins. There was frothy mucus in the trachea, and on 
cutting into the bronchial tubes some very fine specimens of 
strongyles (filaria) presented themselves. 
November 15th, 1879—In making an autopsy on a pig 
which had died the night before, I found the well-known 
lesions, very powerfully developed, of pneumo-enteritis, and 
recognising the scientific name, I determined to look more 
closely into the conditions of the lungs. I found them in 
the same condition as in the first case—slight consolidations 
in places along their free margins, interlobular emphysema, 
and pink discoloration of the affected parts, also frothy state 
of the mouth and the interior of the trachea. I likewise 
found large quantities of filaria (strongyles), which I at 
once forwarded to Dr. T. S. Cobbold, who’ recognised them 
as the species Strongylus paradoxus . Three more were 
slaughtered on the 17th instant for swine fever, but it was 
with the greatest difficulty that I found in one of them 
two specimens of (to me) the same worm. 
Such, then, is the record of these cases, which, as I said 
before, are to me highly interesting. The question that 
naturally arises is—How far and to what extent do these 
parasites go in the development of disease ? I may say 
that I have found consolidations of lung present in cases of 
Strongylus micrurus in calves, and I have heard of a prac¬ 
titioner, not qualified, who, when these existed, although, as 
it ultimately turned out, the lungs were full of strongyles, 
certified that the case was one of contagious pleuro-pneu- 
monia. 1 should like to see some remarks by Dr. Cobbold 
