198 
ON FOREIGN BODIES IN THE 
stances it could not be perceived where the lancet had made the 
puncture. In ^thers, however, a considerable speck remains, 
and in some few cases opacity of the eye continues, though the 
operation has been performed with every nicety, and the worm 
extracted. Sometimes the worm does not come out when the 
eye is punctured, and it is necessary to allow the aqueous hu¬ 
mour to accumulate again, and to repeat the operation. This 
may always be done in two days afterwards, and the lancet may 
be introduced at the same place where the former puncture was 
made. This I have repeatedly done, and succeeded in extract¬ 
ing the worm at the second operation. 
I am not aware that a cure can be peformed by medicines. 
I have often tried local applications, both of a sedative, and of a 
stimulating nature, but never succeeded in removing the opa¬ 
city, or destroying the worm when it was strong and active. 
‘‘ Internal medicines I have never used, not being aware of 
any that could affect or influence a living worm, through the 
piedium of the circulating system. 
ON FOREIGN BODIES IN THE (ESOPHAGUS OF 
CATTLE. By W. Youatt. 
ON the’27th of March last, a market-gardener in Fulham, 
on rooting up his parsnips, ordered them to.be cut in pieces and 
given to his cattle# The hind gave them to the animals whole, 
who greedily devoured them, and a large piece stuck in the 
gullet of a valuable cow. It was evidently seen and felt about 
half-way down the oesophagus. The poor beast soon began to 
swell enormously, and panted sadly. 
The cow-leech was sent for, who, using first the but-end of a 
cart-whip and then a long piece of osier, forced the parsnip be¬ 
low the entrance of the oesophagus into the chest. He had 
then no farther power over it with either of his rude instru¬ 
ments. 
I was then called in, and, on applying a probang, found some 
body resisting its passage into the stomach, about six inches 
within the thorax. The animal was in dreadful agony. No al¬ 
ternative appeared to ofter itself, and I endeavoured to force the 
obstructing substance into the stomach; but it resisted all my 
efforts. Then, turning the probang, and suffering the whalebone 
stilet to protrude, I found that it would pass nearly an inch 
