1900] MICROSCOPICAL JOURNAL. 87 



one cise near the actual left of the specimen, I think there 

 is the rare phenomenon of two individuals in one cyst. It 

 should be born in mind that not all such encysted round 

 worms are Trichinae. It is very difficult to say from sec- 

 tions, unless especially clear and well-stained, whether the 

 form is a trichina or of some other genus. In the short 

 time available for the study of this slide I did not find any 

 distinguishing- feature. The so-called "cell body" of the 

 oesophagus is absolutely distinctive sofaras present knowl- 

 edge goes. — H. B. Ward. 



Dermoid Cyst of Human Ovary. — This cyst was of the 

 size and shape of a large orange. It was composed of a 

 cyst wall of which this section was a part, and a central 

 cavity full of fluid and larg-e dense masses of sebaceous 

 matter and a wad of coarse hair as larg-e as an eg-g-,the sep- 

 arate hairs of which were of almost indefinite length. So 

 closely were they woven that it was well nigh impossible to 

 extricate a single hair without breaking- it. Several large 

 and well formed molar teeth were also loose in the cavity, 

 and many smaller ones, as well as bits of bone, were grow- 

 ing from and in the wall of the cyst, as I quickly found, to 

 the damage of my knife, when attempting to cut a section 

 in the microtome. There were also numerous calcareous 

 masses, so that, as a whole, it was rather hard to cut, and 

 my knife has never yet fully recovered its health. The 

 cyst wall was thick and solid, almost cartilaginous, cover- 

 ed inside with nodules and with many hairs growing into 

 the cavity. The most probable etiology is given in the Ref. 

 Handbook Medical Sciences, 5,417. 



"These growths are located where during fetal life fis- 

 sures exist ; and it is usually accepted that an inclusion of 

 the external germinal layer having taken place, it adheres 

 in the abnormal situation and grows, with the performance 

 of its function the same as though properly placed." — W. 

 H. Sylvestkr. 



Sphaerozoum Punctatum, — This specimen of Radiola- 

 rians, supposed to be from the south of the British Chan- 

 nell, is given as an example of the "Sea-jellies," or Collo. 



