LIST OF ILLUSTRATIONS 



FIGURE PAGE 



1. Showing differences ill constitutional vigor. (After H. R. Lewis) 5 



2. Silver-laced Wyandottes showing great constitutional vigor. 



(After D. S. Thompson) 7 



3. Curtain-front poultry house, exterior. (Original) . .11 



4. Curtain-front poultry house, interior. (Original) ... 13 



5. Crematory. (Original) 33 



6. Skeleton of cock. (After Diirigen) 42 



7. Dissection of hen. (Original) 44 



8. Lite history of a cocoidium. (After Cole and Hadley) . .73 



9. Showing condition of liver in blackhead. (After Moore) . 95 



10. Heart blood of pigeon infected with fowl cholera. (After KoUe 



and Hetsch) 103 



11. Section of lung showing tubercle bacilli. ( After Himmelberger) 117 



12. Breastbone of f6wl showing emaciation in tuberculosis. (After 



Ward) 121. 



13. Liver of fowl affected with tuberculosis. (After Ward) . . 122 



14. Spleen from tuberculous fowl. (After Koch and Rabinowitsch) 122 



15. Tuberculosis of intestines and mesenteries. (After Van Es and 



Schalk) 123 



16. Intestines and mesenteries of a fowl infected with tuberculosis. 



(Afterward) 124 



17. Syringe used in tuberculin test. (After Van Es and Schalk) . 126 



18. Head of chicken showing positive tuberculin reaction. (After 



Van Es and Schalk) 127 



19. Drepanidotcenia infundibuliformis, a tape worm of the fowl. 



(After StUes) 135 



20. Intestine of fowl showing tape worms in nodular teeniasis. 



(After Pearson and Warren) 138 



21. Sketch showing method of introducing turpentine directly into 



crop. (After Gage and Opperman) 140 



22. Worms protruding from intestine of fowl. (After Bradshaw) . 142 



23. Heterakis perapicillum. (After Salmon) 144 



ix 



