LIST OF ILLUSTRATIONS 



All illustrations are by the courtesy of the Bureau of Animal Indus- 

 try, United States Department of Agriculture. 



Frontispiece. The digestive tract of a fowl 



Fig. I. Anatomy of the fowl 26 



Fig. 2. Feeds making a balanced ration 42 



Fig. 3. Average feed consumption of a hen .... 43 



Fig. 4. Mangel beets prepared for feeding .... 106 



Fig. 5. Growing green feed in the poultry yard . ... . 107 



Fig. 6. Feeding garbage 142 



Fig. 7. Egg yolks affected by cottonseed feeding . . . 143 



Fig. 8. Plan of a fattening battery 165 



Fig. 9. Milk fattening of chickens 166 



Fig. 10. Interior poultry grading room 167 



Fig. ii. Feeding chickens with a cramming machine . . 174 



Fig. 12. Live poultry shipping cars 175 



Fig. 13. Use of artificial lights 184 



Fig. 14. Feeding scratch grains 185 



Fig. 15. Large flock of geese on fattening farm . . . 200 



Fig. 16. Feeding young ducks 201 



Fig. 17. Open oats sprouter 228 



Fig. 18. Enclosed oats sprouter 229 



Fig. 19. Simple box style hopper 230 



Fig. 20. Labor saving devices 231 



Fig. 21. Wall type dry mash feed hopper 232 



Fig. 22. Out-door feed hopper 233 



Fig. 23. Another style of out-door feed hopper .... 234 



