ILLUSTRATIONS 
[Drawings by B. L. Das.] 
Plate 1 
Smears from pus. The specimens were fixed in a moist state in aqueous 
picric acid solution and stained by Dobell’s modified iron haemo- 
toxylin stain. Drawn under Y 12 inch apochromatic lens with No. 
6 eyepiece. 
Fig. 1. Type of nucleus. Figs. 1, 3, and 6 show types of nuclei that are 
predominant in smears taken from pus found in the abscess or 
from ulcers in the small and in the large intestines. Note the 
striking difference between these nuclei and that of E. histolytica, 
2. A rounded nucleus. The oval body in the right corner is prob- 
ably the remnant of an engulfed erythrocyte. 
3. An amoaba in the motile stage: n is the nucleus, the other bodies 
are cell inclusions. 
4. An amoeba in resting condition. 
5. An amoeba, showing the characteristic nucleus. 
6. An amoeba, showing a rounded nucleus with a layer of clear cyto- 
plasm surrounding it. The elongated body at the left corner is 
a remnant of an engulfed erythrocyte. 
7. An amoeba with dense rounded nucleus. This appearance is not 
common. 
8. Two amoebae of markedly different sizes. The cytoplasm shows 
well-marked vacuolation. 
9. Two amoebae with well-marked ectoplasm. 
10. An amoeba in the motile stage, showing marked differentiation 
between ectoplasm and endoplasm. 
11. An amoeba with the nucleus showing a central body like a karyo- 
some; this is probaly an artefact. 
12. An amoeba in motile condition. 
13. An amoeba showing no differentiated ectoplasm; a, the nucleus; b, 
a cell inclusion. 
Plate 2 
Fig. 1. Part of an amoeba drawn under % 2 inch apochromatic lens and No. 
18 eyepiece; n is the nucleus; the characteristic unstained patch 
is clearly seen. The protoplasm is vacuolated, e is the ectosarc. 
2. A section of tissue drawn under %2 inch oil-immersion lens and 
No. 6 eyepiece, a, a capillary vessel containing three amoebae; b, 
an amoeba in the tissue. 
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