PRACTICE OF VETERINARY MEDICINE. 251 
illustration affords the best idea of what I wish the reader to 
clearly understand. 
Organs of Circulation .—I carefully examined the following 
veins, viz., the jugulars, the axillaries, the submaxillaries, the an¬ 
terior vena cava, the posterior vena cava, the iliacs, the mesen¬ 
teric, the vena azygos, the brachial veins, the veins of the 
omentum, the femorals, the vense saphense, and a number of others 
of the smaller kind, and in all of them I found their serous mem¬ 
brane more or less diseased. The larger veins presented evidence 
of the effects of intense inflammation. The posterior vena cava 
was in a state of gangrene in three different portions of its entire 
length, while in other places were large black-looking patches, 
some of them terminating abruptly, others passing gradually into a 
lighter shade of colour : the surface of the membrane was rough¬ 
ened throughout, and it easily separated from its subtextures. 
The whole of the tissues forming the omental and mesenteric veins 
were gangrenous, or nearly so ; and all the veins 1 have named 
contained coagulated and semi-coagulated blood. The internal 
membrane of the aorta and the posterior aorta was mottled and 
shadowy, but the mottling was not so distinct as in the veins. 
The heart was mottled also, particularly about its base, on the 
right side of the organ. I next examined the membrane lining 
the heart: the valves of the right ventricle presented patches of 
a dark blue colour; the right auricle contained three large spots 
of the same colour; the same again with the right ventricle itself. 
The left auricle apparently was healthy ; the left ventricle was 
very thickly spotted, particularly on the right side of this cavity; 
and about the “ carnese columnee,” the left auriculo-ventricular 
valves exhibited but one patch of the dark tint. In every cavity 
where the mottling was observed the lining membrane in those 
parts peeled away with the slightest force, but where the tissue 
was free from spots it was just the contrary. Both auricles and 
ventricles contained clots of black blood and fibrine: the fibrine 
presented a proper degree of firmness; the dark blood was the 
reverse. The weight of the heart, apart from its large vessels, was 
exactly five pounds four ounces avoirdupois. 
Blood, Pus , fyc .—I examined blood with the microscope, ob¬ 
tained from the following vessels:—the submaxillary veins, the 
jugulars, the posterior vena cava, the mesenteric and the omental 
veins; and also from the heart, the spleen, and the liver; and the 
blood so examined contained quantities of pus globules*. The pus 
* In order to be fully certain with respect to the pus globules, I put small 
portions of the blood, from many of the veins named, into watch glasses, and 
carefully washed such with cold distilled water. I then examined the clearer 
portions in succession, and was fully satisfied of their being pus. The use of 
