106 



The Farmstead 



enter a building freely through narrow windows 

 placed in thick stone or brick walls. Fig. 22 

 shows the effect of narrow and wide windows 

 in the lighting of a building. Observe the 

 shadow cast by the wall between the two nar- 

 row windows. The sun is directly in front of 

 the windows for but a small i3art of the day. 

 Usually it enters at a more or less acute angle, 



■■iliiiiiiM^^^^ 



Fig. 22. Showing the greater proportionate amount of light admited by one broad 

 •window, as compared with two narrow ones of equal combined opening. 



in which case a window three feet wide may 

 be more than twice as efficient in lighting a 

 room as one two feet wide, and a four- foot 

 window three or four times as efficient as one 

 half its width. 



Figs. 20, 21, 23, and 24 serve to illustrate 

 some of the fundamental principles which should 

 be observed in constructing expensive public 

 buildings, and they may also serve for com- 



