TUMOUR IN THE VENTRICLE OF THE BRAIN. 65 
The lesions which we have narrated show that morbid 
changes were going on long before any sign existed that 
such was the case; or at any rate, visible to common 
observers. Therefore, in a legal point of view 7 , I believe 
such cases ought to be recorded, and it is with this con¬ 
sideration that I am desirous of adding the following singular 
instance which has lately come under my notice. 
In this case w T e are almost entirely without any history of 
the symptoms, except a very vague account of what took 
place a few hours before the horse died. 
The following is a brief description of it, taken from notes 
in the catalogue of the College museum, the cranial and part 
of the facial portion of a head being therein placed as a 
specimen, showing the alteration, which we believe had 
gradually taken place, without, as far as we know% any symp¬ 
toms being observed during the life of the animal. 
On the 29 th of November, 1858, the owner of the horse 
had driven him about twelve miles, and on his return 
observed how remarkably well the horse had performed his 
work. He was sent as usual to a livery stable, where he w as 
put up. On the following morning the owner w r as informed 
that the horse was down, and unable to rise, except partially. 
In this state he was partly dragged and partly led across a 
yard to another stable. A veterinary surgeon was sent for, 
who either bled or attempted to bleed the animal, but he 
died in a very short time. From the time he first fell, up to 
the period of his death, although unable to rise, he struggled 
violently and continually. The carcase of the horse, immedi¬ 
ately after death, was brought to the College for examination. 
The abdominal and thoracic viscera w^ere minutely exa¬ 
mined, but no disease w hatever could be detected. The w hole 
of the muscles also w 7 ere carefully removed and examined, and 
as we anticipated a fracture of some of the vertebrae, they also 
w T ere minutely inspected; all of them, however, as far as we 
could detect, w’ere free from any such lesion. We next exa¬ 
mined the head, and found a depression of the frontal bone of 
the right side to exist,immediately opposite the cribriform plate 
and cells of the ethmoid bone. The periosteum of this de¬ 
pressed portion of bone, and the subcutaneous areolar tissue, 
were stained of a reddish colour, indicating that at some period 
blood had been effused. The inference, therefore, would 
be that such phenomenon w 7 as the result of external violence. 
No other lesions, worthy of notice, w r ere detected, until we 
removed the roof of the cranium, when a very large quantity 
of turbid fluid was found in the arachnoidean and sub- 
arachnoidean spaces. The arachnoid membrane w r as 
