DESCRIPTION OF PLATES II AND III. 



Various forms of malarial parasites: Figs, i to lo inclusive, tertian 

 parasites; Figs, ii to 19 inclusive, quartan parasites; Figs. 20 to 26 

 inclusive, estivo-auturrmal parasites. 



I. — Normal red blood-cell. 2. — Young tertian ring. 3. — Large ter- 

 tian ring. 4. — Half-grown tertian parasite. 5. — Infected cell showing 

 Schiiffner's dots. 6. — ^Adult tertian parasite. 7. — Beginning sporula- 

 tion. 8. — Sporulation completed. 9. -^Tertian microgametocyte. 10. 

 — Tertian macrogamete. 11. — Young quartan ring. 12. — Older quar- 

 tan ring. 13. — Quartan band. 14. — Older quartan band. 15. — Full- 

 grown quartan parasite. 16. — Mature parasite with divided chromatin. 

 17. — Sporulation completed. 18. — Quartan microgametpcyte. 19. — 

 Quartan macrocyte. 20. — Young estivo-autumnal ring. 21. — Large 

 estivo-autumnal ring. 22. — Mature parasite. 23. — Sporulation com- 

 pleted. 24. — Estivo-autumnal microgametocyte. 25. — Estivo-autum- 

 nal macrogamete. 26. — Estivo-autumnal ovoid. 



(From Deaderick, "A Practical Study of Malaria.") 



