DESCRIPTION OF PLATE IV. 



(Kolle and Wassermann.) 

 Malarial Parasite. 



43. To the left a young tropical parasite. To the right a medium and large 

 tropical parasite. 



44. An almost fully developed tropical parasite. The black granules are pig- 

 ment heaps. 



45. Young parasites separated from one another. Broken up division forms 

 twenty-one new parasites. 



46. To the left a red blood-corpuscle with basophilic, karyochromatophilic gran- 

 ules. Prototype of malarial parasite. On the right a red blood-corpuscle with re- 

 mains of nucleus. 



Sexual Forms or Gametes. 



47. An earlier quartan gamete (macrogamete in sphere form), female. 



48. An earlier quartan gamete (microgametocyte), male. 



49. Tertian gamete, male form (microgametocyte). 



50. Tertian gamete, female (macrogamete). 



51. Tertian gamete (microgametocyte) still within a red blood-corpuscle. 



52. Macrogamete tertian within a red blood-corpuscle. 



53. Tropical fever. (^Estivo-autumnal) gamete, half-moon (crescent) still 

 lying in a red blood-corpuscle. In the middle is the pigment. The concave side 

 of the crescent is spanned by the border of the red blood-corpuscle. 



54. Gamete, tropical fever parasite. 



55. Gamete of tropical fever parasite heavily pigmented. 



56. Gamete of the tropical fever parasite (flagellated form), microgametocyte 

 sending out microgametes (flagella or spermatozoa). 



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