218 



EGG FARM. 



ho swelling of the sasli by dampness will cause it to stick. 



The sash must have 

 weights, preferably flat 

 bars of metal, fastened on 

 to hold them down snugly 

 in case of hard winds. If 

 the casings were set per- 

 pendicularly, a hard wind 

 would be apt to move the 

 sash, in spite of the 

 weight, at times when 

 the admission of cold air 

 would be very undesirable. 

 To the bottom of each 

 sash an ordinary sash cord 

 is attached, each cord 

 passing through a screw 

 pulley, Fig. 134, fastened 

 to the underside of the 

 roof. The whole series of 

 cords is attached to a half- 

 inch iron pipe, located a 

 few feet below the screw 

 pulleys, and attached to 

 convenient portions of the 

 building where it is the 

 most out of the way. This 

 pipe is, of course, as long 

 as the row of windows and 

 is set loosely in staples or 

 in holes bored in wood so 

 as to be free to turn. For 

 each cord, a small hole is 

 drilled through the pipe 

 to receive a nail, to which 

 the cord is attached in 



