38 
ON THE MESENTERIC VEINS. 
the first class, or prior to its entering into the lymphatic glands; 
and hence these glands have been considered as designed 
to effect some very important change in the chyle during 
the passage of this fluid through them. The reason of the 
chyle becoming of a more coagulable nature in these glands now 
appears to me very evident; for, in traversing these parts the • 
chyle not only receives a mixture of the absorbed peritoneal ex¬ 
cretion, but also a portion of transparent lymph or tvhite blood 
from the extreme branches of the arterial vessels of these lymphatic 
glands; and if this explanation is just, the chyle ought to gra¬ 
dually become of a more coagulable or red blood-like nature as it 
unites with the lymph, or the more real assimilated xohite venous 
blood in the receptaculum chyli and thoracic duct; and so it 
does, from an admixture of the lymphatic fluid, until it ultimately 
reaches the right side of the heart, there to unite with the red 
venous blood from all the various parts of the body, and in com¬ 
bination with it to pass through the lungs, in order, by the union 
of the oxygen of atmospheric air, to become still more highly assi¬ 
milated, and of a bright scarlet colour, commonly called arterial 
blood. 
[To be continued.] 
EXTRACTS FROM MY CASE BOOK. 
Bij Mr.W. Simpson, F.-S., Southampton, 
No. V. 
Phlegmo7ious Infiamtnation of the Submaxillary Gland, 
In the early part of October last, an extensive postmaster of 
this town had a horse attacked with a disease evincing all the 
symptoms of ordinary catarrh. A farrier attended the case for 
some weeks, during which time the patient gradually became 
worse, until the owner was at length induced to destroy him : and 
from an account of the post-mortem appearances, related to me by 
Mr.-himself, 1 have no hesitation in saying that the horse 
died glandered ; for there was extensive ulceration of the leftside, 
of the septum, extending a considerable distance down the trachea, 
and farcy ulcers had appeared along the abdomen and inside of 
the thighs. Previously to the death of this animal, two others 
were attacked in a precisely similar way ; and on the 2d of Novem¬ 
ber, when those two last patients had been ill about one week, I 
was called in. As the symptoms and treatment of both cases 
