36 
MALARIA 
This plate is intended to show the relationships of different stages in the life-cycle of P. vivax. The 
figures are taken from various sources, especially Boyd (1935b), Schaudinn (1902) and Raffaele (1937). 
The schema is different from the conventional one in that it includes the five series described by Boyd 
(1935b) as occurring in the blood of man, and the pigment-free stages described by Raffaele (1937). 
