PLATE V.i I 



Fm. 21. The Parasite of Mild Tertian Malaria. 

 Cycle I. (Schizogony). Asoxualcyclo in the human blood. 



u, Sporozoile entering rod blood corpuscle and forming young 



trophozoite. 

 6. Young trophozoite in red blood corpuscle. . 



c. Young trophozoite in red bloody corpuscle, with accumulation 



of pigment. 



d. Large pigmented trophozoite, 

 c. Mature schizont. 



/. Commencing segmentation of schizont. 



g. Further stage of segmentation. 



h. Segmented schizont ; formation of merozoites. 



i. Disintegration of red blood corpuscle, sotting free the 

 merozoites. 



j. Young merozoite entering red blood corpuscle. 



k. Macrogametocyte, or female spofont. 



I. Microgametocyte, or male sporont. 

 Cycle II. (Sporogony). Sexual cyclg in the mosquito. 

 "So i m. Microgametocyte. 

 j?g'3 n. Macrogametocyte. 



g 9 § I o. Formation of microgamotes from the microgametooyte. 

 % "S S ) p. Free microgamete. i 



*» Ja 5 ?• Microgamete entering iho macrogameto. 

 S, *" "S ^ *■• Zygote or ookinete. 



«. Sporooyst. 



t. Formation of aporoblasts in the sporocygt. 



u. Formation of sporozoites from aporoblasts. 



v. Rupture of sporocyst, setting free the sporozoites. 



w. Free sporozoites in the body fluid. 



x. Accumulation of sporozoites in tho salivary gland.' • 



y. Sporozoites passing from gland duct into the blood of man. 



Fio. 22. The Parasite of Malignant Malaria. 



a. Young trophozoite entering red- biood corpuscle. 



6. Do. in red corpuscle. 



t. Multiple infection of red corpuscle. 



o'. Multiple infection with chromatic stippling in collular proto- 

 plasm ; a similar cell is seen lying beneath a, — it contains 

 a pigmented trophozoite. 



d. Pigmented trophozoite. 



e. Segmented schizont, cluster of merozoites. 

 /. Microgametocyte, " male crescent." 



g. Macrogametocyte, " female crescent.'' 

 h. Red blood corpuscle with chromatic stippling. , 

 i. Large mono-nucleated phagocyte containing malarial 

 pigment. 



