122 PRINCIPLES OF POULTRY-HOUSE CONSTRUCTION 



When made, light-weight muslin should be used, r,a.nvns 

 jjooheavy and cheesecloth too Tight. At foest. a. 



HPR! 



dust is present in_Jihe_j3oultry house, whiob requires that Jiise 



__ 



muslin curtains Ibe beaten pr swppt nnp.fl,sioTi^])y tn plp^m f>>pm n 

 the air can pass through^freely^, r oojargor too long frames are 



easily and give trouble in 

 raising and lowering 



^ frame about 4x5 feet 

 a very convenient 



s 



(Fig. 78). A glass sash is 

 sometimes placed in the 

 centre of the frame so that, 

 when the curtain is down 

 on stormy days, sunlight can 

 get into the house if there 

 is no other glass window. 



Material for Roofing. 

 The material used to coyer 

 the roof depends almost 

 entirely upon the angle or 

 pitch. A roof with less than 

 one-third pitch should not 

 be covered with shingles, as 

 the water does not run off 

 quickly and the roof will rot. 

 A driving rain is apt to run 

 under the shingles and cause 

 the roof to leak. A^ good, 

 grade of roofing paper may 

 be used, as it is much 

 cheaper and if properly cared 



FIG. 78.-Two plans for constructing frames for ^^ aS Durable as shingles. 



muslin curtains. Sucii paper can be used on 



roofs which are nearly fla/t. 



A roof with low pitch and tight paper is warmer in summer 

 and also warmer in winter than a shingle roof: It can be made 

 cooler in the summer by providing ample ventilation from tne"rear 

 j>ver the roosts ,(Fig. 67). 



Care of Poultry Buildings. It is a policy of economy to care- 

 fully care for poultry houses and attempt to increase the length 

 of their usefulness. This care should consist of keeping the houses in 



