202 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



other ellipsoidal, other again quite irregular and 

 constricted, as if they were made up of several smaller 

 cysts coalescing together. In one case a group of four 

 were attached together, and were suspended from the 

 ovary by a single pedicel. 



The wall of these bodies was, as a rule, thin and 

 almost transparent, but in some cases the cyst was 

 constricted about its middle, and one-half of the whole 

 structure would possess a thin clear wall, while the wall 

 of the other half would be thick and opaque. On 

 preservation in formalin the whole structure swelled 

 slightly and its walls became tense, doubtless by 

 endosmosis. On opening the cyst an albuminous fluid 

 exuded, but after preservation it was sometimes possible 

 to open the cyst and " shell-out " the contents as a clear 

 semi-solid mass. As a rule, this showed no structure 

 when looked at under the microscope, except a kind of 

 froth appearance, due doubtless to incipient coagulation 

 of the contents. 



Fig. 1, PI. Ill, is a photograph of several of these 

 bodies, nearly natural size. One compound cyst is 

 shown, and several smaller ones. Some of the cysts 

 showing a dense wall are also photographed, and a piece 

 of germinal epithelium, showing a cyst on the internal 

 surface, is also represented. 



At first sight these structures appeared to resemble 

 cysticercoids ; but no traces of a scolex could be seen on 

 dissection, nor any trace of calcareous corpuscles, when 

 the thin wall was examined microscopically without 

 preparation. Sections were then made, and it was seen 

 that they were mucoid cysts, somewhat similar to the 

 bodies described in pathological works as ovarian cysts. 



Fig. 5, PI. I, represents a section through the 

 wall of one of the translucent cysts. It is thin, about 



