﻿ILLUSTRATIONS. 



[Photomicrographs by Mr. Charles Martin, photographer o£ Bureau of Science, Manila.] 



Plate I. 



Fig. 1. Blood smear from a calf inoculated with a culture containing many 

 trypanosomata; a typical cross-shaped form and many intraglobular 

 parasites. Mag about 1050X1. 



2. Swelling of intracellular parasite after the blood is drawn from a naturally 



infected calf. Mag. 1570X1- 



3. Extracellular globular parasite in a three hours' culture at 25° C. Mag. 



1570. 



4. Amoeboid parasite in a three hours' culture at 25° to 30° C. Mag. 1580. 



Plate II. 



Fig. 5. Large, globular parasite with two small vacuoles developed in twenty 

 hours' culture at 25° to 30° C. Mag. 1570. 



6. Large globular forms with one large vacuole developed in twenty hours' 



culture at 25° C. Mag. 1570. 



7. Irregular, large, vacuolated forms occurring in forty-eight hours' culture 



at 25° C. Mag. 1100. 



8. More advanced stage in the development of the globular parasite. Body 



crescentic. Forty-eight hours' culture at 25° C. Mag. 1305. 



Plate III. 



Fig. 9. Flagellated form occurring in a forty-eight hours' culture at 25° to 30° C. 

 Mag. 1570. 



10. Enlarged flagellate possessing two blepharoplasts and flagella with but 



a single nucleus; preliminary divisional form occurring in three days' 

 culture at 25°. Mag. 1305. 



11. Smear from a four days' culture grown at room temperature (20° to 27° C.) , 



showing (a) typical, dividing trypanosoma; (6) a slender flagellated 

 form. Mag. 1305. 



12. Smear from seven days' culture incubated at room temperature (20° to 



27° C. ) Showing numerous trypanosomata. Mag. 820. 



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