( 931 ) 
Date 20, 4, 1910. 
120% 
Field of vision for movement, for blue and for shapes of 2 c.M. diameter. 
The field, within which shapes are recognized, is filled with circles. 
from this scheme that only in the left halves of the fields of vision the shapes 
are recocnized, not in the right halves. 
Gradually the state of the patient grew worse. 
Especially the ataxia of the right hand suffered aggravation. With voluntary 
movements most violent accessory movements were shown, When in rest, the hand 
assumed a peculiar position. The disturbance in the deep-seated feeling aggravated 
quickly. The patient was no longer able to localize rightly, his knowledge about the 
position of the hand was lost and the astereognosy became compiete. 
Speech too became more difficult. 
Still, neuritis optica was not to be stated, and the visual symptoms remained 
stationary, until on May 15th death occurred suddenly. 
At the autopsy, in the left half of the brain was found a tumour, 
which was yielded in toto to me, thanks to the kindness of Prof. pr 
VRIES; on examination it proved to be a glioma. There was made 
a series of frontal sections of the brain. These sections, treated partly 
with the Wricrrt-PaL method, partly with carmine, gave the following 
data as to the extension of the tumour. 
Section 1. It strikes the left hemisphere through the proximal region of the 
basal ganglia. At the same time it touches the proximal portion of the tumour, 
which, being but vaguely defined here, perforates the capsula interna, infiltrating the 
lenticular nucleus and the commissura anterior. 
Section 2. It strikes the left hemisphere through the middle of the thalamus, 
which is enlarged by the tumour, and the right hemisphere through the distal end 
of the thalamus. The medial and ventral nuclei of the thalamus are substituted 
by the tumour. The regio subthalamica, together with the red.nucleus and fasciculus 
retroflexus has been pushed ventralward. The field of Wernicke and the retrolen- 
