232 
.TAMES LAW. 
had time to penetrate the intestinal walls and seek an asylum in 
the solid tissues. These can live for an indefinite length of time 
in pools of water without undergoing further development, until 
they are taken in by a mammalian host, when they penetrate the 
intestinal walls and encyst themselves in the muscles. 
All this has been known for many years, but sanitation has 
advanced no further than to advise the microscopical examination 
of all pork, to enjoin that it be thoroughly smoked or well 
cooked before it is eaten, and to utter a warning against keeping 
pigs about slaughter-houses and feeding them on the raw waste 
products. Meanwhile, our pork hams have been, rightly or 
wrongly, acquiring a most undesirable reputation. Dr. Belfield 
and Mr. Atwood, of Chicago, pronounce 8 per cent, of the hogs 
killed in that city to be trichinous, and several European countries 
have forbidden the importation of American hams. In Germany, 
on the other hand, where all pork is subjected to microscopic 
examination, the statistics show that trichina have been found in 
but one of 2,000 hogs examined. 
The protection of our population against this tremendous 
scourge, and of our market against the embargoes of frightened 
Europeans, demands a system which shall reach further and prove 
more thorough. The feeding of pigs on any flesh that is not 
thoroughly cooked should be strictly prohibited, a trichina in¬ 
spector should be made to examine all pork exposed for sale, in 
cities especially, and any discovery of trichinous pork, whether 
from such inspections or from the occurrence of the disease in 
man, should lead to such inquiries as would in all possible cases 
discover the source of such pork, and then should follow the 
destruction and prolonged boilings of all hogs, dogs, cats, rats, 
mice, snakes, and other carnivorous animals on the premises, the 
burning of the hog-pens and manure and the closure of the yards 
against hogs for one year; also, the shutting up of all wells or 
other collections of water to which the swine may have had 
access or into which drainage from the pens could have taken 
place. 
Further, examination should be made in such localities of all 
animals, vertebrate and invertebrate, that the hogs could be 
