64 
CONTRIBUTIONS TO THE PATHOLOGY AND 
which terminated in the glands, and slitting them up, the same 
kind of liquor was liberated; the internal surface of the vessels 
presented, here and there, patches of a light red colour, and on 
comparing the vessels with those of the other limb, they were 
without doubt larger—many of them, in short, were double the 
size in their caliber. 
Respiratory Organs .—The air-passages were all normal—the 
lungs bulky and capacious. The right lung was adherent, to a 
small extent in two places, to the pleura; which adhesions were 
most probably formed when the animal laboured under pneumonia 
in 1839. Some portions of this lung were also impervious to the 
air: such portions, however, were not large—they existed along its 
inferior border; the left lung was perfect in every respect. 
Organs of Circulation .—The heart, when divested of all its 
vessels and as much of the extraneous fat as I could cut away, 
weighed exactly nine pounds eleven ounces avoirdupois; its pe¬ 
ricardium, cavities, and valves were all beautifully perfect. I slit 
open the coronary, the thoracic, abdominal, iliac, and femoral 
arteries; but found not the slightest change in their internal 
surfaces. 
Brain and Nervous System .—The head and a portion of the 
neck I had removed from the trunk, to enable me to make a more 
careful dissection of it; the spinal cord I examined on the spot in 
a rough manner. I will, however, first describe the state of the 
brain, and notice the condition of the spinal cord afterwards. The 
brain, when exposed, presented to the touch a moderate degree of 
firmness; but its colour was that of pale yellow (a pale straw- 
colour, in fact), more or less deep throughout its whole substance. 
Its hue I observed to be deepest on exposing what Mr. Percivall 
denominates the “centrum ovale.” The interior of the lateral 
ventricles were of the same tint: they did not contain any fluid, 
and the plexus choroides in both cavities were of a pale dirty 
brown. The plexus of the right ventricle contained a portion of 
gritty matter : these structures altogether were small from what I 
have seen them, and what I should expect to find when normal. 
The cerebellum was the same; and the cellular tissue which lay 
around the base and posterior part of this organ also contained 
gritty matter. The colour of the medulla was paler than that of 
the brain, and this pale colour was present through the whole 
length of the spinal cord ; and I did not think the cord so firm in 
its texture as it ought to be; but of that I will not be positive— 
certainly it varied in this respect in different parts. I also ex¬ 
amined some of the large nerves, but failed to detect any thing 
peculiar about them, save the optic nerves, which were the colour 
of the brain—the retina the same. The chief peculiarity I noticed, 
