282 PARASITES OP MAN 



delicate sarcode globules surrounded by fine granules. The 

 granular matter displayed a tendency to collect itself in the 

 form of oval masses without showing any trace of a limiting 

 border. One of these masses, measuring ^' in length, I 

 examined under a Wasserlein-objective, when I further ascer- 

 tained that the elementary particles or granules were uniformly 

 oval in shape, rather highly refractive, their size scarcely 

 exceeding g^" in diameter. The sarcode corpuscles, on the 

 other hand, were of different sizes, ranging between g~" and 

 1B 1 56 // in diameter. 



From the facts thus elicited, negative as they were in 

 respect of helminthic structure, I could see no escape from the 

 conclusion that we had to deal with a new form of psorosper- 

 mial bag, whose granular contents consisted of excessively 

 minute pseudo-navicellaB. In the centre of the largest hernia- 

 like loop there was a clear oval disk, which at first brought to 

 my mind the nucleus of Monocystis infesting the earth-worm, 

 but it was merely a vacuole. 



The case recorded by Gubler reminds me of another remark- 

 able instance of psorospermial cysts, in this case associated 

 with true hydatids. In 1873 Dr Whittell sent me particulars 

 of a case in which the contents of an hydatid of the liver 

 (drawn off, during life) consisted of shreds of a true hydatid, 

 a few echinococcus-hooklets, together with multitudes of 

 spindle-shaped amoeboid particles of excessive minuteness and 

 delicacy. The bodies, floating in a transparent fluid, formed a 

 thick milky or creamy fluid, resembling pus in appearance ; but 

 there was no trace of pyaemia. Judging from Dr Whittell's 

 figures, he must also have found a solitary microscopic nematoid 

 haematozoon, the nature of which was not clear to him. I 

 believe it to have been a specimen of Filaria sanguinis hominis. 

 Be that as it may, the case is altogether unique and deserves 

 further elucidation. 



As regards the higher forms of protozoa it must suffice to 

 allMe to the Cercomonas hominis of Davaine, found in the 

 dejections of cholera patients, to the Gere, urinarius of Hassal 

 and C. saltans of Ehrenberg, to the Trichomonas vaginalis of 

 Donne, detected in the vaginal mucus, and to the Balantidin m 

 coli of Claparede and Lachmann, originally found by Malmsten 

 in the human colon. The Balantidium, or Paranuerium coli, 

 has frequently been observed in the evacuations of fever patients, 

 and it has also been found by Dr Treille in patients suffering 



