68 
Eqnine Piroplasnlosis 
exceed 5’4"/o; in Horse III they attained 13'2“/o- In films obtained 
from another horse, and which were kindly lent us by Sir John 
McFadyean, there were 6'6 7o of infected corpuscles. In the case of 
Horse II the parasites appeared in the blood in such small numbers 
that there was no adequate opportunity of studying them. 
/oz /06 /o6' /os //Si 
Diagram I. N. equi. Illustrating the movements and alterations of form of a small 
parasite which was under observation from 14 minutes until 112 minutes after the 
blood was drawn. The corpuscle finally became crenated. The parasite appeared 
alternately oval, piriform and amoeboid, etc. protruding at one time two pseudopodia. 
The parasite seemed to grow in size. (Horse I, 6. xii. 1909, G.H. F.N. del.) 
