22 
A CASE OF TUBERCULOUS ABSCESS OF THE BRAIN. 
REPORTED BEFORE THE PHILADELPHIA NEUROLOGICAL 
SOCIETY. 
Remarks by J. H. W. Rhein, M. D. 
Examination by Herbert Fox, M. D. 
The following is a preliminary report upon a case of tuber- 
culous abscess of the brain in a young drill baboon (Papio 
leucophceus) whose symptoms were studied three days before 
death. A fuller report will be made later, which will be 
in the nature of a comparative anatomical study. The 
brain, in large part, has been cut in serial sections, and as 
a study of these sections is not quite complete, only a brief 
reference to the pathological anatomy w^ill be made. 
The baboon appeared to be perfectly well until October 
18th, 1906, when some lameness in the anterior and posterior 
extremities on the right side was observed. This gradually 
increased, and was associated with general convulsions. 
On November 30th, 1906, I made an examination, and 
found the following condition. The right upper and lower 
extremities were weaker than on the left side. On the left 
side the power seemed to be fair. He w^as able to hold on 
to an iron bar with the fingers of the upper and lower ex- 
tremities on the right side, but in withdrawing the bar it 
was not difficult to overcome his grasp, and the power on 
this side was distinctly less than that on the left. The 
movements of the right arm were somewhat ataxic, as ob- 
served when he made efforts to grasp the bar. The knee 
jerks were increased on both sides, and appeared to be equally 
so. There was no evidence of facial palsy. He moved both 
sides of the face equally well at times when he expressed 
anger or fear in the facial expression. The tongue seemed 
to be retracted equally well on both sides. 
Tests for hemianopsia were, of course, unsatisfactory, but 
he seemed to recognize readily the approach of the iron bar 
