Lighting of Farm Buildings. 



ing. Trees or buildings near by, which cover a consider- 

 able portion of the sky, may reduce the light entering a 

 window very much. Much more light conies from the 

 sty high above the horizon than from low down and hence 

 a porch over a window cuts out a very large share of the 

 light which might enter it. 



Buildings which have thick walls require larger win- 

 dows to admit the game amount of light as would enter 

 through windows in thin walls. Basement stables with 

 heavy stone w r alls require larger windows because the walls 

 are thick, and so w r ith a brick or stone house. 



AVindow r s long up and down admit much more light 

 than windows of the same dimensions with their long axis 

 horizontal because much more light comes from the upper 

 portion of tbe sky. So, too, windows extending from near 

 the ceiling toward the floor light the room better than 

 when extending from near the floor up. 



430. Position of V7indows. Living rooms and stables 

 should if possible be arranged so that the body of light 

 may come from the south side w r here the direct sunshine 

 may enter the windows. In a dwelling house in the win- 

 ter this is very important because then the amount of light 

 is smallest at best and the family must be more closely 

 confined and therefore need the direct sun then most. For 

 poultry and for swine south windows are specially de- 

 sirable. Large windows at the south are not as objec- 

 tionable for heat in summer as might at first be thought 

 because the sun is so high that a large portion of the direct 

 sunshine is reflected from the glass and prevented from 

 entering the house ; but during the winter, when the sun 19 

 low, the advantage wliich comes from its heating effect as 

 well as the light is very considerable^ 



