PLATE I 



Fig. I. Simple tertian parasite. Fresh preparation. 



I and 2. Young forms, pigmented, actively amoeboid. 

 3. Large form with 'boiling' pigment. Corpuscle 

 much enlarged. 



Fig. 2. Simple tertian parasite. Romanowsky stain. 



I and 2. Young and medium size forms, shewing 

 stippling of the red cell (SchiifTner's dots). 



3. Female gamete, with much stippling of red cell. 



4. Segmenting stage. 



Fig. 3. Malignant tertian parasite. Fresh preparation. 



1. Young parasites. Horse-shoe forms. 



2. Mikrogametocyte (male crescent). 



3. Makrogamete (female crescent). 



4. Oval stage of crescent. 



5. Spherical stage of crescent. 



Fig. 4. Malignant tertian parasite. Romanowsky stain, 

 i and 2. ' Ring ' forms. 



3. Large egg-shape form. 



4. Large form shewing coarse stippling of red cell. 



5. Segmenting form. Very rare in peripheral blood. 



6. Makrogamete (female crescent). 



Fig. 5. Quartan parasite. Fresh preparation. 



1. Medium size. 



2. Large size. 



3. Presegmenting form. 



4. Segmenting, daisy, or marguerite form. 



Fig. 6. Quartan parasite. Romanowsky stain. 

 i and 2. Young forms. 



3. Large form. 



4. Segmenting form. 



5. Mikrogametocyte (J). 



