898 
B. O. MINGE. 
what would be termed a successful one. He was entirely wrong 
in mistaking something else for trichinae. Ecuckart’s experi¬ 
ments were made upon the pig. But not being careful in the 
selection of infested food, with which he made experiments, he 
failed. Following Eeuckart’s experiment Professor Zenker 
made an autopsy of a young woman, who was thought to have 
died with typhoid fever. In the muscles and intestines of the 
woman were found great numbers of trichina, in the free state, 
laival state, and in the encysted state. At first it was undecided 
whether the worm found was trichina or not, but after a num¬ 
ber of experiments it was found to be trichina. It was discov¬ 
ered that the young woman had eaten flesh of pork that was 
infested with trichina. A piece of the same pork that was eaten 
by the young woman was given to several mammals along with 
their food, and in each case the mammals proved to have tri¬ 
chinosis. Tnere were a great many scientific men who exam¬ 
ined the muscles of this young woman, and all found that she 
had eaten infested flesh. 
-Trichinae in pigs in America were not discovered until 1847. 
Experiments were made with the pig and they proved that if 
the pig be fed with infested flesh it will itself become infested. 
Very little was ever known of trichina up to the time of the 
studies and researches of Zenker in i860. Since that time 
there has been great progress made in the study of trichinae. 
Prom this, great improvements were made in the sanitary 
measures of dealing with trichina. Virchow, Eeuckart, Bohes, 
Welpech, Colin, and various others should be named in the list 
of those who searched for trichina. 
Speaking of animals that are susceptible to trichina, we can 
frame our answer in a nutshell, by stating that all animals 
are susceptible to trichina, though some have it in a much 
severer form than others, because some animals are not as sus¬ 
ceptible as other animals. Man, rat and pig are the animals 
that are the most easily susceptible to trichina. All are suscep¬ 
tible in the following order: Man, pig, wild boar, rat, mouse, 
Norway rat, guinea pig, rabbit, hippopotamus, calf, lamb, horse, 
