RABIES IN THE DOG.—SYMPTOMS. 
63 
of the brain; I have, however, seen, or persuaded myself that I 
saw, an evident difference—I must not say so much in the in¬ 
jection as in the general colour of the cerebral substance here. 
There was a dark tint shaded with green, as if decomposition 
had already commenced. 
In every case that I examined, I found injection of the mem¬ 
branes, or the substance of the medulla oblongata. If there was 
injection above or below, the medulla shared in it, and usually 
exhibited a deeper shade; and I have just said that there was in¬ 
jection here, when it could with difficulty or not at all be traced 
elsewhere. I used at first to be tempted to consider these appear¬ 
ances as diagnostic ; but I afterwards considered that, for aught I 
knew, diseases of other kinds, in which the nerves proceeding 
from the medulla oblongata were principally involved, might 
produce the same lesions. I was, however, more and more con¬ 
firmed in the truth of the theory of rabies, which I shall ven¬ 
ture in the next lecture to state to you, when I observed the 
uniform affection of this portion of the brain. The vascularity 
was more particularly evident in the corpora olivaria. Minute 
streaks of blood almost invariably followed the scalpel there; 
and the greyish yellow of the corpus had a slight hue of pink 
mingling with it. 
In the spinal cord I always found considerable lesions, but 
they were not of a uniform character. I have seen vascularity 
of the membranes through the whole of the spinal cord, and 
every where of nearly the same intensity. On some occasions I 
have found little or no injection until I arrived at the fifth or sixth 
dorsal vertebra; while, in other cases, the morbid lesions have 
been confined to the lumbar, and, perhaps, sacral regions, and 
there they have exhibited the highest degree of intensity. I 
have seen every degree of ramoliissent, from the commencement 
of the softening to almost or quite the fluidity of pus, occupying, 
perhaps, not more than the space of an inch, or extending from the 
middle of the dorsal region to the termination of the sacral por¬ 
tion ; and also confined either to the inferior (anterior) column, or 
including the whole of the cord. As, however, lesions of this 
nature are common to every direct affection of the spinal cord, 
and to almost every disease in which its functions are implicated, 
I repeat, that I have long been unaccustomed to examine the 
cord in supposed cases of rabies, except there was some peculiar 
difficulty with regard to the other lesions, or to gratify the 
curiosity of some medical friend. 
What, then, are the circumstances which guide me in my ex¬ 
aminations?—The colour of the tongue, the enlargement of the 
papillae on its dorsum, and the inflammation or tlie pharynx. 
