ESSENTIALS OF A POULTRY HOUSE 169 



serve the growth of mould spores on the bread. On which 

 piece of bread does the mould form first and fastest? Why? 

 The open tumbler represents a dry, ventilated compartment. 

 The wet timibler represents a wet, non-ventilated place. 

 The same condition shown here takes place in a wet, poorly 

 ventilated poultry house. 



Exercise No. 33. — Muslin Ventilation. — Purchase a yard 

 of light-weight muslin and a few tacks. On some windy 

 day tack this muslin over the outside of the lower part of 

 one of the school house windows. Be sure to put the musUn 

 over a window on the side of the school house towards 

 which the wind is blowing. Then open the lower sash and 

 allow the pupils to stand inside of the window in front of 

 the muslin curtain. Compare the atmospheric conditions 

 felt here with those felt when the next window adjoining 

 is opened and they are allowed to stand in front of an open 

 improtected window. Explain from this object lesson the 

 advantages of the curtains as used in poultry houses. 



THOUGHT QUESTIONS 



1. What is the relation between the design of the poultry house and 



the birds' environment? 



2. What is meant by environment? 



3. What are some of the factors of environment? 



4; Enumerate the modem principles in the design of a poultry house. 



5. Why should the house iniwhich the birds are kept be free from 



moisture? 



6. Discuss three kinds of moisture which may be found in the poultry 



house. 



7. Why is plenty of sunlight desirable in the house? 



8. Give a good rule to govern the amount and distribution of sunlight. 



9. Why do birds need plenty of fresh air in the house? 



10. How can the poultry house best be ventUated? 



11. Why is automatic ventilation by the means of flues not the best? 



12. How much floor space should be given each bird? 



1.3. How can the birds be protected from extremes of temperature? 



14. How can a poultry house be made rat-proof? 



15. Is simplicity in poultry house construction important? 



16. How does a coat of paint help preserve the house? 



17. Discuss economy vs. cheapness in poultry house construction. 



18. Describe an ideal plan for a poultry house. 



Reference. — United States Farmers' Bulletin 574, Poultry House 

 Construction. 



