TREATMENT.—Consists of using various dips, as Lime and Sulphur, which is recommended by the United States Bureau of Animal Industry. This is very effective and inexpensive. Scabby sheep should be dipped a week or ten days after shearing; two dippings are necessary at the interval of ten days. After dipping, move to non-infected range or pastures. TICK. (_Louse Fly_) CAUSE.—The tick that infects sheep has a very small head sunken into its round body. The head possesses a flexible trunk or snout that penetrates the skin. Through this trunk, the ticks derive their nourishment by sucking the blood from the body of the sheep. The tick is also provided with three pairs of legs. The female lays her young in the form of a spun egg (cocoon) which is oblong in shape and brown in color. This egg is cemented to the wool of sheep where young ticks are hatched in about four to six weeks. SYMPTOMS.—Long wooled sheep are more susceptible to this tick as their wool provides shelter for both the tick and its eggs. After shearing the sheep the ticks have a tendency to leave the body and to migrate to the legs or to unshorn lambs where their snouts or trunks pierce the skin which appears to become infected, producing a swelling and inflammation. The infected sheep run, scratch and bite themselves. When these ticks become developed in large quantities, they produce a paleness of the mucous membranes of the eyes, mouth and nose, as the ticks suck large quantities of blood, which produces an anemic condition. The sheep become poor, weak and unthrifty. TREATMENT.—Satisfactorily treated by dipping infected sheep in Coal Tar dips or Emulsions of Crude Petroleum. Shearing the sheep has a good effect, but care must be exercised as the ticks then rapidly migrate to the lambs. DISEASES OF POULTRY [Illustration] CAUSE, SYMPTOMS AND TREATMENT [Illustration: LOCATION OF PARTS OF THE FOWL.] LOCATION OF PARTS OF THE FOWL 0. Beak. 1. Comb. 2. Face. 3. Wattles. 4. Ear lobe. 5. Hackle. 6. Breast. 7. Back. 8. Saddle. 9. Saddle feathers. 10. Sickles. 11. Lesser sickles. 12. Tail coverts. 13. Main tail feathers. 14. Wing bow. 15. Wing coverts, forming wing bar. 16. Secondaries, wing bar. 17. Primaries or flight feathers. 18. Flight coverts. 19. Point of breast bone. 20. Fluff. 21. Thigh. 22. Knee joint. 23. Shank. 24. Spur. 25. Toes, or claws. PREFACE This chapter, as its title indicates, is to give to the Students and Veterinary Profession a general view of the diseases of poultry, their causes, symptoms and treatment in a condensed and yet in a complete form.