Life History of the Malaria Parasite. 
a , exotospore, or malarial germ, as introduced into the blood by the mosquito ; b, exoto- 
spore after entry into blood corpuscle ; c, growth of exotospore into an amcebula ; 
d, division of amcebula to form enbsemospores ; e, liberated enhaemospores ; /, growth 
of enbsemospore into a crescent at expense of corpuscle ; g, male, and h, female 
crescent ; i, male cell with projections, which lengthen, and are eventually set free 
as spermatozoa ; j, fertilisation of ovum by spermatozoon ; k, fertilised egg as the 
active motile vermicule ; l, enlarged vermicule, after boring through the stomach 
wall of the mosquito, forming the sphere ; m, segment of sphere at maximum stage 
of development, containing countless needle-shaped spores, which, when it bursts, 
escape as exotospores into the organs of the mosquito’s body and pass through the 
salivary glands into the proboscis, and so infect a man bitten or pricked by the 
mosquito. (The figures are taken from enlarged models exhibited in a case in the 
Central Hall of the Museum.) 
Fig. iOF. 
