242 
A Myxosporiclian 
Fig. 5. A spore treated for 10 hours with a weak pepsin hydrochloric acid in a hanging drop 
preparation. Lhe amoebula is seen escaping through the opening. The emergence did not 
take place further than this condition although it was observed for 40 minutes. P. 
Fig. 0. A spore under a similar treatment to those shown in Figs. 2-6, for 6 hours. P.Tns.B.H. 
Fig. 7. A later stage than the one shown in Fig. 4. P.Tns.Sa.G. 
Fig. 8. A liberated amoebula lying beside the empty spore membrane, after being treated with 
the gastric fluid for 16 hours. P.Tns.Sa.H. 
Fig. 9. An amoebula observed in a hanging drop preparation of spores and stomach fluid after 
22 hours. The fusion of the two nuclei is seen taking place. P.Srn.Sa.G. 
Figs. 10, 11. Fresh amoebulae from the same preparation which contained the amoebula shown 
in Fig. 8. P. 
Fig. 12. An amoebula whose nuclei are undergoing fusion. P.Tns.Sa.G. 
Figs. 18-16. Four stages of schizogony in the tubules of kidney. P.S.Sa.G. 
Figs. 17, 18. Young trophozoites from the uriniferous tubules of the frog’s kidney. P.S.Sa.G. 
Fig. 19. A young trophozoite. P.S.Sa.G. 
Fig. 20. A young trophozoite. P.Tns.B.D. 
Fig. 21. A fully grown uninucleate trophozoite. P.Tns.Sa.G. 
Figs. 22-25. Stages in nuclear division of uninucleate forms. P.Tns.Sa.G. 
PLATE XIV. 
Fig. 26. A binucleate trophozoite, with its vegetative and the dividing generative nucleus, 
attached to the epithelial cell of the tubule of the frog’s kidney. C.S.F.D. 
higs. 27, 28. Trophozoites, one of the nuclei (the generative nucleus) having just completed its 
division producing two generative nuclei. P.Tns.Sa.G. 
Fig. 29. Two views of a trinucleate trophozoite attached to the epithelial cells of the tubule of 
the frog’s kidney. The generative nucleus has just completed its division C.S.Sa.D. 
Fig. 30. A typical trinucleate trophozoite. C.S.Sa.D. 
Fig. 31. A trinucleate trophozoite. P.Tns.Sa.G. 
Fig. 32. A trinucleate trophozoite. P.Tns.B.H. 
4 ig. 33. A trinucleate trophozoite, the vegetative nucleus undergoing further division. P. Tns.Sa.D. 
Fig. 34. A tetranucleate trophozoite. P.Tns.Sa.D. 
hig. 35. A similar stage. The nucleus on the right of the vegetative nucleus is surrounded by 
a clear space, and dividing to form a gemma. P.Tns.Sa.G. 
Fig. 36. A similar stage. P.Tns.Sa.D. 
4ig. 37. A trophozoite with a gemma. Besides the vegetative nucleus which is seen below and 
two generative nuclei on the left, an island of cytoplasm with similar nuclei, a gemma, is 
observable. C.Tns.Sa.G. 
Tig. 38. A trophozoite with a gemma at the left half, the cytoplasm being spread out in an 
extremely thinly made smear. In the right half, six generative nuclei beginning to form a 
spore, below which a large vegetative nucleus is noticeable. C.Tns.Sa.G. 
PLATE XV. 
Fig. 
Fig. 
Figs 
Fig. 
Figs 
Fig. 
Fig. 
Fig. 
39. A more developed trophozoite with a fully grown gemma. P.Tns.Sa.G. 
40. A trophozoite with a fully grown gemma. P.Tns.Sa.G. 
• 41-43. Liberated gemmae, each with a vegetative nucleus and two generative nuclei. 
Fig. 41, C.S.Sa.G. ; Fig. 42, P.Tcs.Sa.D .; Fig. 43, P.Tcs.Sa.D. 
44. A trophozoite showing the dividing generative nuclei. P.Tns.Sa.G. 
. 45-47. Trophozoites, each with a vegetative nucleus and four generative nuclei. Fig. 45, 
P.Tns.Sa.G .; Fig. 46, C.S.Sa.D .; Fig. 47, P.Tcs.Sa.D. 
48. A trophozoite. The vegetative nucleus and one of the generative nuclei are undergoing 
division. P.Tcs.Sa.D. 
49. A trophozoite with a vegetative nucleus and seven generative nuclei, one of which is 
further dividing. C.S.F.D. 
50. A trophozoite with a vegetative nucleus and eight generative nuclei. C.S.Sa.H. 
