28 
rod-shaped or angular. The rings may shew a very 
faint blue outline or a thicker portion on the side 
opposite to the nucleus. 
Besides these young rings, we have irregular forms 
of considerable variety, e.g., a mere faint bluish line 
stretching across the corpuscle, yet always shewing 
U.iv\<n.(i*caL » 
4 « r f‘ 
C>ts etfvf 
0VS.I 
()9CLlj 
"Rovh.ll (|0<lv 
Fig. 6. Forms of the malaria parasite commonly met with in the 
blood:—The dark dots in the first line represent chromatin , 
the fine dots , pigment 
somewhere a red nucleus ; or, again, a mere streak 
along the margin of the red cell, with, however, a red 
nucleus in the blue protoplasm (accole forms). 
Finally, no small structure should be diagnosed 
as a parasite unless it is clearly made out that it has 
three distinct parts. 
(i) A red nucleus. 
(ii) A white vacuolic area within the ring (in the 
irregular forms this cannot be distin¬ 
guished). 
(iii) Blue protoplasm or body. 
