Selection of Material 



99 



to be used and the manner of building will depend 

 largely upon the material at hand. In one locality 

 certain materials may be comparatively cheap, while 

 in other localities the same articles may be relatively 

 more expensive than other material equally suitable 

 for the purpose. In selecting material, it should 

 be borne in mind that the building is to provide a 



FIG. 32. Poultry houses and yards Massachusetts Agricultural College. 



warm, dry, well- ventilated, well-lighted home for 

 the fowls. If these requirements are satisfactorily 

 complied with, it will be necessary to provide roof 

 and side walls that are impervious to moisture and 

 relatively poor conductors of heat. Suitable arrange- 

 ments for ventilating and lighting the building must 

 be provided, and some provision should be made 



