Fio. 4. — Life History of the Malaria Parasite. 
, exotospore, or malarial germ, as introduced into the blood by the iriosquito ; 6, exoto- 
spore after entry into blood coipuscle : c, growth of exotospore into an aniceHula : 
d, divibion of amoebula to form enhaetnospores ; e, liberated enhajmo.-pores ; 
/, growth of enhsomospore into a cresct nt at expense of corpuscle ; g. male, and 
/j, female crescent ; 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 ; Z. enlarged verm icule, after boring- 
through the stomach wall of the mos(]uito, forming the sphere; m, segmeut 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 nnd pass through the salivnry glands into the proboscis, and so 
infect a man bitten or pricked by the mosc^uito. 
