312 
A. LIAUTARD. 
The only lesions which she presented were entirely similar to 
those found in the antelope. Same arrangements of the cysts, also 
in large numbers ; some loose and others adherent, here a few 
small ones, there a number attached together, as in grapes. The 
liver presented also a number of them, and were in general aspect 
entirely similar to those of the former case. The cause of death 
was made as due to the presence of the cysticercus tenuicollis. 
Some of them were sent to Dr. Birdsall, Professor of Helmin¬ 
thology, to the College, and the following is the answer made to 
our inquiries as to the true nature of the parasites:— 
My Dear Doctor • 
The two specimens which yon sent to me for examination I 
will designate as No. 1 and No. 2. No. 1 proved to be one 
hydated cyst (echinococcus ; and they are now all referrable to 
Tcenia echinococcus as their mature form ; to specify zoological 
varieties is no longer necessary). It was of the multilocular 
variety, presenting the exogenous and the endogenous forms of 
growth. The cyst which you sent was about the size of a hen’s 
egg, irregular in outline, with protuberances upon it (exogeneous 
masses); and one section was seen to be tilled with a slightly 
gelatinous fluid, and great numbers of smaller sacs, from the size 
of a mustard seed to that of one which filled one-half the larj^e 
cyst. Most of these were collapsed and detached, at their place 
of attachment calcareous masses being found. Thus, these cysts 
were well advanced in degeneration. The walls between some of 
these cysts consisted of firm connection-tissue, so that an alveolar 
appearance was presented. Taking a small cyst: on account of 
its transparency I found by microscopic examination a number of 
echinococcus heads on the inner surface. They were usually 
detached, and presented a granular appearance. The circlet of 
hooks could still be made out, but the exact number was difficult 
to obtain; twenty-eight could be counted with certainty, arranged 
in two rows alternating with each other and leaving both of 
nearly the same length. The average width of the circlet of 
hooks is 04 m. m., occupying about one-third of the diameter of 
the head. The average length of the hooks is 0192 m. m. 
