F. S. BILLINGS. 
44f> 
encapsuled trichinae in tiie midst of purely adipose tissue, between 
the muscle-Jibres of fattened hogs ; never , however, in the purely 
adipose tissue which lies upon musculature. In the cases in ques¬ 
tion I vainly searched for any indications of the sarcolemma of 
the muscle-fibres, but the parasite was enclosed in a form of cap¬ 
sule, nevertheless. 
The encapsulated parasites may be met with in the striated 
muscles of all parts of the body. They may be found in tbe digital 
muscles; those of the abdominal walls ; of the extremities; the 
eye ; the ear ; the larynx and pharynx; the tongue ; the oesopha¬ 
gus ; the diaphragm. The heart, however, appears to be a favored 
locality, for they have only been found in its flesh in very isolated 
cases. (Leuckart, Fiedler.) In making examinations of oesopha¬ 
geal musculature of a rabbit fed with trichinous pork, I was much 
struck with the abruptness with which one met with trichinae. In 
passing in review a microscopic section of the oesophago-cardiac 
portion of the stomach, when one passed from the musculature 
proper to the stomach, to that of the oesophagus, in fact, trichinae 
could be seen where the latter interlaced or intruded itself be¬ 
tween the fibres of the former. But in no case could I find a 
parasite in the non-striated fibres. These pirasites are not, how¬ 
ever, equally distributed over the musculature of the autosite, but 
on the contrary, seem to have their favorite places of abode. They 
appear to have a predilection for the muscles of the anterior part 
of the body. Among these, those of the tongue, larynx, pharynx, 
eye and masticatory muscles being especially favored. The mus¬ 
cles of the body are more favored than those of the extremities. 
Ver} r few are found in the inferior portion of the caudal appen¬ 
dage of any animal. In the extremities, the parasites are found 
to be more abundant when the muscle-fibres begin to lose them¬ 
selves in their tendinous extension, than in the body of the mus¬ 
cles. 
The following interesting and valuable statistics with reference 
to the dispersion of the trichinae over the organism, are taken from 
the “Miththeilungen am der thierarztlichen Praxis im Preussischen 
Staate.”—1877-78, p. 99. 
Microscopic preparations having an average length of 2 ctm., 
