DESCRIPTION OF PLATE I. 



(Kolle and Wassermann. ) 



Malarial Parasites. 



4 



1. Two tertian parasites about thirty-six hours old, attacked blood-corpuscles 

 swollen. 



2. Tertian parasite about thirty-six hours old ; stained by Romanowsky's method. 

 The black granule in the parasite is not pigment but chromatin. Next to it and to 

 the left is a large lymphocyte, and under it the black spot is a blood plate. 



3. Tertian parasite, division form nearby is a polynuclear leukocyte. 



4. Quartan parasite, ribbon form. 



5. Quartan parasite, undergoing division. 



6 Tropical fever parasite, (^stivo-autumnal.) In one blood-corpuscle may 

 b2 seen a smaller, medium, and large tropical fever-ring parasite. 



7. Tropical fever parasite. Gametes half-moon spherical form. Smear from 

 bone marrow. 



8. Tropical fever parasite which is preparing for division heaped up in the blood 

 capillaries of the brain. 



Asexual Forms. 



9. Smaller tertian ring about twelve hours old. 



10. Tertian parasite about thirty-six hours old, so-called amoeboid form. 



1 1. Tertian parasite still showing ring form forty-two hours old. 



12: Tertian parasite, two hours before febrile attack. The pigment is beginning 

 to arrange itself in streaks or lines. 



13. Tertian parasite further advanced in division. Pigment collected in large 

 quantities. 



14. Further advanced in the division. (Tertian parasite.) 



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