64 SPECIAL CATTLE THERAPY 



4. Onset is very acute. 



5. Course of disease is fi'om two to five days. 



6. No appetite. 



7. Feces have distinct odor ; foul. 



8. Feces are liquid. 



9. Feces are hemorrhagic. 



10. Milk secretion diminished. 



11. No pertussis. 



12. Commonly fatal ; probably 20 per cent. 



Johnes Disease 



1. Affects all ages. 



2. Occurs in all seasons. 



3. Affects animals under all conditions of feeding. 



4. Onset is gradual. 



5. Course of disease is from one to three months. 



6. Appetite remains good. 



7. Feces have no marked odor. 



8. Feces are copious and thin. 



9. Feces have no characteristic color. 



10. Milk secretion not greatly affected. 



11. No pertussis. 



12. Always fatal, eventually. 



