VI. 



FIG. 42. Diagram illustrating the life history of the Malarial Fever parasite. The stages 

 shown above the line of dashes are passed through in the blood of a human being ; those 

 below the line, in the body of an Anopheles, mosquito. For explanations of the stages, 

 see pages 89-91. (From Minchin in Lankester's Treatise after various authors.) 



