916 
They disappear when the patient regards fixedly. In darkness nystagmus to 
the left. 
The convergency is normal, the right bulbus however deviates soon towards 
the left. No double vision. 
The moving of the two bulbi is normal to the right, to the left it is accom- 
panied by nystagmus, which however soon ceases afterwards, the moving of the 
two bulbi upward and downward is likewise complicated by nystagmus. 
Besides this there is no paralysis of the muscles of the eye. 
When the patient is looking straight forward, and is summoned to regard fixedly 
anybody standing on the right of him, he does so in the following manner: 
He turns his head to the right; both eyes remain behind in this movement, 
they are even drawn towards the left for one moment, it is only after this that 
they are following slowly the movement of the head, and that the patient looks 
fixedly into the desired direction. 
V. The N. trigeminus. All motor functions of mastication etc. are undisturbed. 
Sensibility on the contrary has suffered. 
The tactile sense is unimpaired on both sides. Every contact, however slight, 
with a hair-pencil or a small plug of cottonwool, is instantly perceived. 
On the other hand the perception of pain is destroyed over the whole of the 
trigeminus-area on the left side. The difference between the head and the point 
of a pin is not distinguished. Nowhere at any point within this area is a painful 
contact perceived. To the right the sensibility to pain is intact. 
The perception of temperature, intact to the right, is likewise disturbed to the 
left. On this side melting ice is still recognized to be cold, but as being less 
cold than to the right. With regard to the perception of heat, there is always a 
difference disfavourable to the left side. The boundary-line of the left analgesy 
(conf. the scheme) is distinctly defined against the median line, it then passes over 
the top of the head and returns behind the ear (which is included in the analgesia) 
_ along, the chin to the median line, where it meets the analgetic right half of the 
body (conf. later on). 
The left half of the mucous membrane of the cavity of the mouth is likewise 
analgetic, the boundary-line passing over the median line of the tongue and + 
over the middle of the palatum. The latter is swollen (conf. later on). 
A deep impression is correctly perceived both to the right and to the left within 
the trigeminus-area. The two points of the compass of WEBER are well distinguished 
on both sides at a distance of + 20 em. (vertically). The sense of localisation 
is intact on both sides. 
The cornea is normally sensible to the right. To the left both the pain-sensi- 
bility and the tactile sense have completely disappeared in it, and a piece of 
melting ice on the left cornea is not felt to be cold. The cornea-reflex is failing. 
The left facial half is hyperaemic and swollen, it feels hotter to the touch, but 
there is no trophical abnormality. 
Vil. The N. facialis is intact on both sides. All mimical and voluntary inner- 
vation of the face is performed on both sides in the same manner. 
Villa. The Nervus cochlearis. The tympanic membrane (observation of Dr. 
VAN GILSE) is normal to the right, and to the left it becomes normal too after 
the removal of a plug of cerumen. 
The patient has not heard well to the right since long (before the attack of 
vertigo). 
