514 ENTOZOA AMONG HORSES IN ISLAND OF SINGAPORE, 
had been publicly sold at Paris, and warranted by an ex¬ 
perienced veterinary surgeon. The discussion originally arose 
in the Academy upon a case of glanders communicated from 
the horse to a man, who had eventually recovered.— Lancet . 
POISONING OF PIGS BY NITRATE OF POTASH. 
We were recently consulted with reference to the probable 
cause of the sudden death of two pigs, the property of a 
gentleman residing in the neighbourhood of London. It 
appears that it was his custom to have the pigs fed on refuse 
rice and other grain, after it had been boiled. 
The whole of the old stock being exhausted, a fresh supply 
was obtained, from which the two pigs in question were fed, 
for the first time, on a Sunday morning, and were then left 
till the after part of the day. On the man’s second visit to 
give them their evening feed, he was surprised to find both 
the animals dead. 
A post-mortem examination showed the villous coat of the 
stomach to be deeply reddened in colour, and presenting 
such an appearance on the whole as to lead us to request 
that some of the food might be forwarded to the College for 
investigation. This being done, a considerable quantity of 
broken crystals of some salt was detected among the grain, 
which, on a further examination, were found to be frag¬ 
ments of nitrate of potash. The proportion of this agent 
in the quantit} r of the food was ascertained to be about a 
drachm to every pound. 
Nitrate of potash has long been known to be poisonous to 
the lower animals when given in large doses; but the fact, in 
this instance, is chiefly valuable in putting the purchasers of 
refuse grain for the feeding of pigs and other animals on their 
guard against the injurious consequences that are likely to 
follow. Both rice and nitrate of potash being East Indian 
productions, it is not unreasonable to suppose that they got 
accidentally mixed either in the warehouse or on board ship 
during the passage. 
PREVALENCE OF ENTOZOA AMONG THE HORSES IN THE 
ISLAND OF SINGAPORE. 
A short time since we received from Mr. C. Emmerson, 
M.R.C.V.S., Singapore, some specimens of the Occyums , 
