312 WORM IN THE EYE OF THE HORSE, 
tioned case union was so complete between the first and second 
lumbar vertebrae, that I was necessitated to divide them with a 
saw. Having done so, I discovered within the great foramen, at 
the junction of the two vertebrae, three distinct deposits of bony 
matter, somewhat similar to a small splerit or spavin; and also 
within the theca about four ounces of serum, but no morbid 
appearance of the marrow itself. 
The most general cause is pressure on the brain ,* and I am 
disposed to think, that if experiments similar to the one I am about 
to relate be followed up, in the course of a short time hypothetical 
reasonings may give way to true ones. 
Some time ago the head of a horse afiected with kumree 
was divided from the neck, with the view of examining the seat of 
glanders : in the act of raising it from the ground, to place it on a 
table, the muzzle was taken hold of, so that the part adjoining the 
neck pointed downwards. While in this position, a young gentleman 
present observed about three or four Ounces of a limpid fl uid run from 
the cavity of the cranium. The cranium was instantly opened, butna 
morbid appearance of the brain could be detected: the fluid ob¬ 
served was supposed to be an accumulation of the water which 
is always found in the ventricles to the amount of about thirty or 
forty drops. 
Immediately afterwards another kumree horse was destroyed, 
and about an ounce of a similar fluid was found. floating in the 
cavity of the cranium, but no morbid appearance of any part of 
its contents. 
A few days subsequently the following experiment was tried, 
for which was selected a fine arab horse, eight years old, in good 
condition, and apparently free from every complaint but w^eakness 
of the loins, which he had in the most malignant degree I ever 
witnessed : so much so, indeed, that it was with great difficulty he 
moved forwards, and was totally unable to ascend a small acclivity 
that was adjacent. 
The horse was cast, and a line was drawn horizontally from the 
inner angle of one eye to that of the other* ; then a vertical line 
from the centre of the horizontal one towards the muzzle (vide 
Diagram). About half an inch, or perhaps more, from the centre of 
the vertical line, and about the same distance from the horizontal 
one, the centre pin of a trephine was placed, having first removed 
the integuments by two sections made thus V, with the apex 
pointing inferiorly. The trephine was now w^orked till the bone 
^ If Mr. Molyneiix were to draw his horizontal line from one foramen 
supra-orbitarium to the other, he would better accomplish his object. The 
operiinj^ which he recommends would be at the very inferior part, or even 
below the frontal sinus ; nor could he thence easily or at all get at “ the 
most depending part of the bones of (he cranium.’' Ed. 
