PARASITOLOGY. 215 
of the cell, opposite each other; now begins the con- 
striction of the protoplasm; finally only a film holds 
the two newly formed corpuscles together. These 
corpuscles are at first pear-shaped; later the nucleus 
passes to the center and the corpuscles become round. 
This process goes on till as many as sixteen corpuscles 
may be formed. The great distention of the cell 
caused by the corpuscles causes it to rupture. These 
newly formed corpuscles possess amoeboid movement 
and invade new cells, where they develop to full size. 
Animal Infested —The dog. 
Part Infested—The red blood cell. 
Name of Disease—Canine piroplasmosis; malig- 
nant malarial jaundice. 
Condition Produced—The spleen is two or three 
times its normal size, black and soft. The liver is 
congested; the bile thick and granular; the kidneys 
are congested and friable; the urine is port-wine col- 
ored; medulla of the bone is congested; the fat is 
yellow. 
Symptoms.—Loss of appetite; high elevation of 
temperature; icteric visible mucous membranes ; great 
prostration and finally death. 
PrropLasMA Egur (Equus—horse). 
Distribution —Africa, China, Russia, and Philip- 
pines. 
Description—The parasite is crescent-shaped and 
takes staining deeply in its center. It varies from 
one-half to two microns in length. 
Animal Infested—The horse. 
