ILLUMINATION AND PHOTOMETRY 451 



lighting is commonly applied to the illumination of public 

 buildings, statues, etc. (the Statue of Liberty in particular). 

 It was extensively used at the Pan- American Exposition in San 

 Francisco in 1915. In flood lighting it is necessary not only to 

 illuminate the object but the projectors must be so placed that 

 architectural details are brought out by relief and shadow. This 

 is \\vll illustrated by Fig. 406 showing the Public Library at 

 Lynn, Mass. 



During the past few years, street lighting has been studied not 

 only from the photometric standpoint, but from the architectural 

 point of view as well. In many instances crude poles, mast arms 

 etc. have been replaced by ornamental fixtures of the type shown 

 in Fig. 397. 



