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CONTRIBUTIONS TO THE PATHOLOGY AND 
Organs of Respiration . — The nasal passages were healthy; the 
larynx was covered with mucous and frothy spume ; the mucous 
membrane of the organ exhibited patches of a scarlet red colour, 
but the membrane was not smaller, nor yet softened in any part. 
The trachea contained masses of mucous and frothy spume. The 
lower part of the mucous membrane of the trachea, and the mem- 
brane covering the larger of the bronchial tubes, exhibited larger 
patches of red, and of a darker colour, than those peculiar to the 
membrane of the larynx. The coloured parts were also thickened 
and softened : in odd places the colour passed into a purple and 
green colour. The substance of the pulmonary structures did not 
exhibit any trace of very recent disease. About five inches in 
depth of the lowest portion of each lung was perfectly solid, and 
impervious to air ; a considerable force was required to push the 
knife into these portions : in fact, cutting it was like cutting car- 
tilaginous tissue. The pleura costalis was perfectly healthy. 
Organs of Circulation . — The pericardium contained about six- 
teen ounces, by measure, of clear serum. The internal surface of 
the membrane was perfectly smooth, and unchanged in every part. 
The heart, when dissected of its fat and separated from its large 
vessels, weighed exactly ten pounds eight ounces avoirdupois. The 
thickness of the muscular wall of its systemic ventricle was exactly 
two inches and a quarter ; while the thickness of the muscular 
wall of its plumonic ventricle was only one inch; both ventricles 
contained large clots of fibrin. One of the tricuspid valves of the 
right ventricle was greatly thickened for about an inch, or a little 
more, in circumference ; and this thickened portion contained seve- 
ral minute granular points, or little elevations, which were situated 
on the outer surface of the valve : other points, of a precisely simi- 
lar character, were situated here and there over the valve, and also 
on the surface of three of the little cordse tendinese ; the other valves 
were all healthy; the same also with respect to the large arteries in 
connexion with the heart. The principal veins comprising the ante- 
rior and posterior venae cavae, portal vein, abdominal vein, vena 
azygos, and jugulars, were all filled with very black fluid blood, in 
which floated clots of coagulated fibrin. 
Hepatic System . — The liver, when exposed to view, appeared 
of a most enormous size : the posterior or concave surface of the 
right lobe presented a curious appearance ; its peritoneal covering, 
over a surface of seven or eight inches, was detached from the 
substance of the organ below it. The liver, in fact, was emphyse- 
matous, as, the moment I pierced the raised portion with the point 
of a knife, some air became immediately liberated, and the raised 
part collapsed. On removing the liver from its attachments, ! was 
necessitated to use as little force as possible, otherwise its whole 
