128 LABORATORY LESSONS IN GENERAL SCIENCE 



7. Discuss arrangements for warmth, for light, and for 

 the ventilation of the chicken house. What provisions 

 should be made for exercise by the fowls, and for dust baths ? 

 Where should nests be placed, and what schemes may be 

 employed to keep them clean? 



8. Make a diagram in some detail showing the interior 

 of a chicken house. At about what cost may a substantial 

 house for a flock of twenty fowls be built? 



9. In the hatching of chickens, what advantages (a) in 

 setting hens; (b) from use of incubators? Describe in a 

 general way the construction of an incubator. 



10. Where incubators are used, (a) what time is required 

 for hatching the eggs ; (b) what per cent of the eggs are likely 

 to hatch under favorable conditions; (c) what care should 

 be observed as to the temperature maintained, the supply of 

 moisture for the eggs, and their turning and cooling ? 



11. How is the fertility of eggs to be determined after 

 they have been a few days in the incubator ? How soon can 

 this be done ? 



12. What arrangement serves as a chick nursery within 

 the incubator? Of brooders, state (a) their purpose; 

 (b) the manner of their construction ; (c) the rate of reduc- 

 tion of temperature in them ; (d) their period of use. 



13. How often should little chicks be fed, and how much 

 at a time ? 



14. In general, what care should be gjven grown fowls? 

 State the kind, and the relative cost of foodstuffs for hens. 



