1100 



PATHOGENIC POKTOZOA 



been successfully worked out by Adie, 2 who has demonstrated the 

 ookinetes, zygotes and oocysts in the lower portion of the midgut. As 



FIG. 146. H^MOPROTEUS COLUMB.E. la to 3a, Development of female parasite in 

 blood of dove; Ib to 36, Development of male parasite in blood of dove; 4ta f 

 46, 56, 6 to 12, Development in the digestive tube of the fly (Lynchia) ; 13 to 

 20, Development of the parasite inside leucocytes in the lung of the dove. 

 (After Avagao. MacNeal, "Pathogenic Microorganisms," published by P. 

 Blakiston's Son & Co.) 



the oocyst grows, it stands out from the gut wall and finally shows the 

 striations indicative of the presence of sporozoites; after rupture of 



