254 
CONTRIBUTIONS TO THE PATHOLOGY AND 
one locality of the organism and deposited in others. I cannot 
suppose, however, that the present case admits of any such ex¬ 
planation; several difficulties present themselves against it, the 
principal of which is, the very great amount of pus found. With 
respect, again, to the second supposition, a great objection to it 
also is, that if a small quantity of pus had been absorbed, and by 
its presence in the veins excited an inflammation which in the end 
produced more of the substance, we should unquestionably have 
had severe constitutional derangement much earlier; such a large 
quantity of matter could not have been formed in the veins, and 
deposited where it was between the 13th and the 19th of February 
inclusive, a period of little more than six days. We have, there¬ 
fore, confessedly, but one mode of solving the difficulty; and it is 
in supposing that inflammation was originally excited in the tissues 
around where it was deposited. Many facts support this view. 
First, the well-known course which strangles denominated “ irre¬ 
gular” is known to pursue; secondly, the thickened state of the 
cellular tissue in which the pus was embedded ; thirdly, the 
thickened state of the coecum; fourthly, the deep red blush upon 
the mucous membrane of the guttural pouches; fifthly, the con¬ 
sistence of the pus; sixthly, its want of nauseous effluvia so com¬ 
mon to matter in abscesses of recent formation; and, seventhly, it 
is in perfect accordance with the course of the disease, and of the 
general phenomena observed. Without entering, on the present 
occasion, into any very complicated description of strangles, I may 
briefly state, that it is a disease which usually manifests itself in 
young horses by the appearance of a tumour within the submaxil¬ 
lary space, and which is attended with more or less constitutional 
disturbance. Its seat, in ordinary cases, appears to be the cellular 
tissue and lymphatic glands within the submaxillary space, in 
which the mucous membrane of the larynx and adjoining parts 
participate. It terminates by the formation and discharge of pus 
from this tumour; and the case then generally progresses to a 
speedy and favourable termination. The above, for the sake of 
distinction, may be named regular strangles. Occasionally, how¬ 
ever, the disease pursues a different course; tumours appear in 
other parts; such as between the hind extremities, “in the loose 
ply of the skin in the flank,” on the fore arms, cheeks, and quar¬ 
ters, the udder of the mare, &c.; hence, by combining such facts 
with the entire history of the present case, we are led to the con¬ 
clusion that it was one of this latter character, and that such pus 
was the result of inflammation in the tissues around where it was 
found deposited. 
Cause of the Phlebitis .—Having now satisfactorily decided the 
question as to the origin of pus, T have next to inquire into the 
