PARASITOLOGY. 141 
intestinal tract are blood suckers; they wound the 
mucous membrane and suck the blood; this adds to 
the irritation and produces anemia; the symptomsas 
noted are diarrhoea, thirst, loss of appetite, unthrifty 
coat, anemia and possibly death. 
Treatment.—Many drugs have been tried with 
more or less good results; areca nut, santonin, ka- 
mala, etc. Good results will be obtained by fasting 
Fig. 51—OESOPHAGOSTOMA INFLATUM. Caudal extremity, female 
a, Sharp terminal point. b, Anus. 
Photomicrograph, 1 x % 
the animal for 24 hours, then give one and one-haif 
pounds of salts followed by from two to six ounces 
of gasoline; calves must receive a proportionately 
smaller dose; for large bunches of cattle sulphate of 
iron and salt kept constantly before the animals will 
ce effectual in destroying many of the worms. Bs 
