212 PARASITOLOGY. 
takes the infested blood cells into its intestinal tract; 
the piroplasma leaves the red blood cell, passes 
through a change in which new bodies are formed; 
these new corpuscles leave the intestines and migrate 
to the ovary; thus the egg becomes infested. These 
virulent protozoa are contained in the larva, and 
after it emerges from the egg it is capable of inocu- 
lating susceptible cattle. 
Parts Infested —The red blood cells; may be found 
free in the plasma. 
Name of Disease-—Texas fever; splenic fever; 
Spanish fever; tick fever; red water; black water; 
southern cattle fever; Australian tick fever. 
Condition Produced.—The liver is congested, bile 
thick and granular; fat is icteric (jaundice); the 
spleen is enormously enlarged and contents consist- 
ency of blackberry jam; kidneys congested; urine 
port-wine colored; cancellated portion of the bone 
is black. An animal so affected is unfit for food. 
Symptoms—The animal has a loss of appetite; 
unthrifty appearance; rise in temperature accom- 
panied by an accelerated respiration and pulse. The 
back is arched; animal stays off to itself; port-wine 
colored urine, hence the chronic form has been called 
red water, or bloody murrain. 
A condition produced by some species of the 
genus Piroplasma is called piroplasmosis. 
Treatment—lIn all forms of piroplasmosis of the 
blood stream the essential treatment would be quinine 
in full medicinal doses. 
PrRopLasMA Ovis (Ovis—sheep). 
Distribution —Found in Montana and other localt- 
ties in the United States, 
