CONTENTS 



The principles of brooding and brooder construction : — page 



1 . Maintaining a proper temperature 303 



2. Maintaining pure air without drafts . 304 



3. Providing an opportunity to get away from the heat and to exercise 



in cool air 305 



4. Providing for exercise 305 



5. Providing for abundance of sunhght 306 



6. Providing room for the attendant to work inside the house 306 



7. To be usable the year round 307 



8. To be portable 309 



9. Provision for shade, and use of ground 310 



10. Economy in heating 310 



11. Provision for safety from lire 311 



12. Importance of a large, roomy hover 311 



13. Provision for economy of labor 312 



14. Economj' of construction 312 



15. Provision for top and bottom heat 313 



16. Adaptability of the system 313 



17. The question of location 313 



Construction details of the improved New York State gasoline-heated colony 



brooder-house 314 



Cost of the gasoline-heated colony brooder-house 320 



Construction of the New York State colony-house gasoline heater 324 



Operation of the gasoline brooder 326 



Other types of A-shaped colony houses, and tlicir uses 329 



The shed-roof house 33^ 



A summer house for cockerels 333 



Flocking 334 



A few suggestions for operating the gasoline-heated colony brooder-house- • . . 334 



Conclusion 32^^ 



301 



