OF OPIUM AND HYDROCYANIC ACID. 
99 
bined action of two agents in diminished doses. This in abler 
hands may be turned to practical and permanent advantage ; and I 
trust the narrative may rouse some talent to investigate the subject. 
But to the subject. Baffled in both instances as to the giving 
permanent relief, I put the cob, the subject of the first experiment, 
to work ; but, after a few weeks, being annoyed by so frequently 
being told about his cough, I made up my mind to sell him. Being 
rough in his coat, I had him clipped ; when, after a few days, my 
attention was drawn to the circumstance, that either my horse’s 
cough must have left him, or, from repeatedly hearing it, I had 
ceased to regard it. The thought dwelt on my mind, and, true 
enough, I found it had left him. I rode him on through the win- 
ter and the following summer, and he had no return of it. 
The other instance is in a mare, which I now ride. In the months 
of August, September, and October, she was continually being 
the subject of intermittent cough. I had her clipped : in a few 
days she ceased to cough, and has continued so ever since. 
In conclusion, I cannot express a hope, after what I have ad- 
vanced, much less dare sanction an opinion, that clipping of hack 
horses “ will one day be superseded by singeing.” 
POLYPUS IN THE LARYNX OF A COW, AND ABSCESS 
IN THE ARYTENOID MUSCLES. 
By Mr. W. A. Cartwright, Whitchurch. 
In December last, I was sent for to see a heifer, rising two years 
old, that made a great noise during respiration ; in short, was a 
roarer. She had been out at a lay all the summer, came home in 
October, and had a husk on her, supposed from a cold. 
In November she began to make a noise in her breathing, but 
gradually got worse. There was no external swelling about the 
throat ; but I had little doubt the obstruction lay in the larynx or 
upper part of the trachea. I therefore put a balling-iron in her 
mouth, and examined about the larynx, and found that I had a dif- 
ficulty in introducing even my finger into it. Not knowing the 
exact nature of the case, I inserted a seton in each side of the 
throat, and blistered it well ; but advised her to be killed, as she 
was good meat, and not far gone in calf. In four or five days 
afterwards she was sold for £5 to a butcher, and killed. 
Examination . — On taking an external view of the larynx, it 
was evident that there was a small tumour on the superior and pos- 
terior half of it, and inclining a little to the off-side, and pressing 
