CH. XII MOVING PICTURES 395 



simply visiting the best conducted machine shop in the world. 

 Education is personal ; everything gained has to be paid for to the 

 last farthing in mental effort. 



Moving pictures are the offspring of science through some of the 

 finest minds that the world has known. It is simply for the finest 

 art, the best science and the highest aspirations of mankind to take 

 this powerful agent their offspring and put it to the real service 

 of humanity. Let it do what it is so capable of doing in the church, 

 in general and technical schools of all grades; in scientific, educa- 

 tional and philanthropic societies; in the theater, in the club, and 

 finally in the home. 



AUDITORIUM, SCREEN AND OPERATING ROOM 



First, it is necessary to consider the room for projection, its 

 arrangement for seats, lighting during and between exhibitions, the 

 screen and the position of the machine. 



553. Auditorium and screen. The auditorium should be 

 arranged so that everyone in the room can get a good view of the 

 screen, there should be a sufficient number of aisles and exits in 

 order that the room can be filled or emptied quickly and without 

 disturbance; and provision should be made for giving a sufficient 

 illumination during the performance so that people can find seats 

 or leave the room without difficulty. 



The screen should be dead white and free from wrinkles. If 

 simultaneous sound effects are to be produced it is an advantage to 

 have the screen slightly translucent so that the pictures can be seen 

 from behind. In a long narrow room one of the metallic screens is 

 an advantage. These screens are very poor for those on the side 

 when used in a wide room, as the picture appears very dim when 

 seen from the side. When the hall is provided with a stage it is well 

 to hang the screen quite a distance from the front of the stage so 

 that it will be easier to avoid stray light and in order that the people 

 in the front seats will not be too close to the picture. A dark 

 border or frame to the screen is also an advantage. (For the size 

 of screen and of the screen images see Ch. XII, 633, 638-639). 



