APPENDIX F 



DIRECTIONS FOR VENTILATION AND 

 HUMIDIFICATION 



I. Ventilation 



THE studies outlined in this book indicate that the best and simplest 

 method of ventilation is by means of ordinary windows. At 

 frequent intervals the top should be lowered a little and the bottom 

 raised about the same amount. It is important, however, to avoid 

 drafts. Therefore every window should be fitted with a board at the 

 bottom. If such a board is placed an inch or two from the window and 

 has a height of five or six inches, it will prevent the air from blowing 

 directly into the room, and yet will allow a complete change of air 

 within a moderately short time. 



II. Humidity 

 A. Houses Heated by Steam or Hot Water 



1. Take a piece of absorbent cotton cloth. Cut it as if you were 

 going to make a curtain to place between your radiator and the wall. 

 Make it long enough to lie five or six inches on the floor. Make a hem 

 so that a curtain rod, string or wire can be run through it. 



2. Fasten a sash curtain rod horizontally behind each radiator, and 

 hang the curtain from it. If you have no curtain rods, simply run a 

 string or wire through your little curtain, and tie the string around the 

 radiator. Put a little block of wood under the string at either end to 

 hold it out from the radiator. This will let the curtain hang freely 

 between the radiator and the wall. 



3. It may be necessary to place an additional rod or string near the 

 bottom of the radiator in order to prevent the moist cloth from striking 

 against the wall and damaging the paper. A tuck can be made at this 

 level and the rod or cord run through it. 



