312 



H. B. FANTHAM. 



cases, not easily identified. However, chromatin is always 

 present, and is situated strictly peripherally, the chromatin 

 masses being flattened against the circumference of the 

 parasite. One, two, or three (text-fig. 28) masses of 

 chromatin were seen in various specimens. In text-fig. 27 

 there are really two masses of chromatin, as a blepharoplast 

 occurs close to the nucleus. 



These parasites are truly rounded forms, not merely pyri- 

 form oues seen blunt-end-on, as could be determined by 

 focussing, and from the fact already mentioned, that the 

 central area was clear ; also the corpuscle-hosts are only thin, 

 bi-concave discs. Some of these parasites are ring-like. 



(e) On the Chromatin of Endoglobular Parasites 

 occurring in Groups of More than Two in a 

 Corpuscle. 



Cases of three or four parasites, more especially four, 

 occurring together within a corpuscle are fairly common. 

 These may result from multiple infection or from two binary 



Text-figs. 29—31. 



divisions after a single infection. All the members of such a 

 group usually exhibit the same or similar distribution of the 

 chromatin elements. In text-figs. 29 — 31 there are slight 

 differences in the chromatin masses among the members of a 

 group, and it is for this reason more especially that they are 

 figured. 



Of the group represented in text-fig. 20, one of the parasites 

 only possessed a mass of loose chromatin. In text-fig. 30 



