134 SPASM OF THE MUSCLES OF THE GLOTTIS. 
from a horse belonging to the proprietor of the Banbury 
Mills. He had been in his possession for nine or ten years, 
and had never been ill the whole time till the attack of which 
he died. 
I have forwarded the specimens by train this afternoon to 
you. 
I remain, dear sirs. 
Yours truly. 
[We thank Mr. Page for the concretions. They are pre- 
cisely the kind he has described. 
Calculus No. 1, weighs 6 lb. 13 oz. avoir. Its form is 
globular, and it is much roughened on the surface. A section 
having been made of it, the nucleus is perceived to be a piece 
of stone, around which the phosphates are deposited in con- 
centric layers, some of them being darker in colour than the 
others. 
Calculi Nos. 2 and 3, weigh respectively 1 3 oz. and 5 oz. 
The form of each is round, and the surface smooth and 
polished.] 
CASE OF SPASM OF THE MUSCLES OF THE 
GLOTTIS. 
By J. B. Dobson, M.B.C.V.S., Kettering. 
Early one morning I was requested to attend a light- 
cart-horse, the property of a baker in this town. On my 
arrival, I was told that the animal had been taken out in the 
cart in the morning, seemingly in his usual health. On 
coming to a slight hill, however, he began to make a loud 
groaning noise ; evinced all the symptoms of suffocation, and 
would have fallen had he not been immediately taken 
out of the cart. He was at once led home, and when I saw 
him he presented no symptoms beyond a somewhat accelerated 
pulse, and a good deal of exhaustion. On a careful examination, 
I could detect nothing abnormal in the respiratory apparatus, 
except eliciting the fact that the animal was somewhat of 
a roarer. I administered a sedative, and left him with the 
understanding that if anything unfavorable took place I was 
to be summoned. At night a messenger came saying the 
horse was ill again. Upon entering the stable the animal 
presented the following symptoms : he was stretched out all 
his length in the stable, apparently in the agonies of suffoca- 
