GRIT AND SHELL BOXES 157 



one or more small compartments in the large dry-mash hopper for 

 the feeding of grit and shell. These materials are much heavier 



FIG. 105. A group of commercial feeding appliances. 



than ground grains, and will feed through small openings without 

 clogging, and there is much less waste by the birds (Fig. 105). 



REVIEW. 



1. Give five essential features to be considered in planning poultry fixtures. 



2. How much perch room is required per bird? Give variation. 



3. Discuss location and construction of perches. 



4. What are roosting closets, and what are their advantages? 



5. Give the points in the construction of dropping boards. 



6. Give the principles of nest construction. 



7. Tell of the number of nests required and common types used. 



8. What are the essential points of a good trap nest? 



9. Describe the following nests: (a) Cornell; (6) Pearl; (c) Connecticut. 



10. What are the possible uses of "broody coops," and how are they made? 



11. Why are dust boxes needed? 



12. Give a good dusting material. 



13. Describe a house with alley; give advantages and disadvantages. 



14. What are the uses of open feeding troughs? 



15. Give points in their construction. 



16. Give the necessary features of a good dry-mash hopper. 



17. Describe an efficient home-made hopper. 



18. Describe two types of fountains. 



19. What are the desirable points in a drinking fountain? 



20. Why have grit and shell hoppers? 



References. Labor-saving Poultry Appliances, by Rice and Rogers, 

 Cornell Bulletin 284. New Poultry Appliances, by Rice and Lawry, Cornell 

 Bulletin 248. Hoppers for Poultry Feeding, in United States Farmers' Bul- 

 letin 316. Water Pan for Poultry, in United States Farmers' Bulletin 317. 

 Poultry-house Plans and Appliances, by C. A. Rogers, Cornell Circular No. 1. 



