F. W. O’Connor 
253 
5. (Text-fig. 3.) A flask-shaped brown body varying from 12-60/x in 
its long axis, thickly covered with compound hairs generally growing in the 
same direction to the top of the cell, where they became concentrated and 
formed a rough projection. 
The first three vegetable cells mentioned were only occasionally noticed 
to be associated with diarrhoea; they then occurred in large numbers. When¬ 
ever found, the cells described as 4 and 5 were invariably accompanied by 
the form of diarrhoea described earlier, and of the two kinds of cells the first 
was the more common. 
The vegetable structures resembling Chilomastix dysts were often dis¬ 
covered in many men about the same time. On one occasion I found them in 
15 different patients of the same battalion in two days. I have never found 
them associated with diarrhoea which could be attributed to their presence. 
Vegetable cells have been so frequently reported in the stools of patients 
suffering from diarrhoea in warm countries, and I have found them so fre¬ 
quently in similar cases for which no cause could be discovered, that I think 
it is highly desirable that mycologists should devote their attention to these 
and other fungi in human stools. 
DESCRIPTION OF PLATE XI. 
Figs. 1, 2. Pathogenic entamoebae containing red blood cells and showing, in Fig. 1, the 
E. histolytica type of nucleus and, in Fig. 2, the so-called tetragena type of nucleus; both 
amoebae occurring in the same slide. (Case Pte. S. 5. xii. 16.) 
Fig. 3. Pathogenic entamoeba with red blood cells included and showing two nuclei in the 
parasite. (Case W. 21. i. 17.) 
Figs. 4-7. Entamoeba coli. Free forms. Showing various protozoal and vegetable cell inclusions. 
Fig. 4. A much vacuolated amoeba, with characteristic nucleus and containing a uninucleatu 
E. histolytica cyst; “chromidia” can be seen within the cyst. (Case C. 30. iii. 17.) 
Figs. 5 and 6. Amoebae containing Lamblia cysts. The nucleus in these amoebae is atypical, 
being enlarged, faintly defined and with the chromatin granules much split up. The case 
was controlled for several days and in the cystic phase only E. coli cysts were passed. The 
latter were mostly 8-nuclear. (Case W. S. 11. xi. 16.) 
Fig. 7. Entamoeba coli from another case showing Lamblia cyst included. The nucleus here is 
characteristically E. coli. (Case A. 1. vi. 17.) 
Fig. 8. Entamoeba coli with included vegetable cells resembling Chilomastix cysts. From same 
case as Fig. 7. 
Figs. 9, 10. Two Entamoeba coli, each showing included an oocyst of Isospora. In Fig. 9 the oocyst 
is lying along its long axis and the stretching of the amoeba at the poles of the cyst can 
be seen. In Fig. 10 an optical section of the oocyst in its narrow axis is shown: in this figure 
the remains of the shrunken and degenerated protoplasm can be made out. In both cysts 
the double contour of the cyst wall can bo observed in part of its extent. (Case R. 14 vi. 17.) 
Fig. 11. Characteristic appearance of Entamoeba, coli as seen in a medium of almost pure blood 
from a case of Schistosoma■ mansoni causing dysenteric symptoms. The tendency of the red 
cells to collect around and adhere to the parasite is seen. No red cells are present in the 
interior of the amoeba. (Native Egyptian, Case 227, 5. v. 17.) 
