THE THEORY OF CITY DESIGN. 



73 



meets the ground (supposed a horizontal plane at the bottom of 

 the vertical line), the point P in the figure. For successive hours 

 of the day, i.e., before or after noon, the terminals of the shadows 

 lie on the corresponding straight line meeting at this point. At 

 the equinoxes, the successive positions of the shadow-terminal 

 during the day lie on a straight line running east and west, 

 . Fig. 7. 



