THE TOLL OF THE MOSQUITO 



Q © O 





Fig. 6. — Stomach of mosquito with oocysts. 

 (After Craig.) 



Fig. 2. — Parasites of tertian malaria. 

 (After Thayer and Hewetson.) 



Fig. 3. — Parasites of estivo- 

 autumnal malaria. (After 

 Thayer and Hewetson.) 



Fig. 4. — Parasites of quartan malaria. 

 (After Thayer and Hewetson). 



mB>, 







s 



Fig. 7. — Sporozoites in oocyst. 

 After Craig.) 



Fig. 5. — Fertilized female 

 malaria parasite (zygote) ■ 

 (After Craig.) 



Fig. 8. — Sporozoites 

 (After Craig.) 



