COLOR 



Some boldly throw complementary colors to- 

 gether. A complementary, or opposite, Is that 

 color which Is not contained In the complemented. 

 Thus, red Is the opposite, or complementary, of 

 green, a compound of the two other primaries, 

 and vice versa. If we look Intently on yellow, 

 then quickly turn away, or close our eyes, we 

 shall see purple, that color representing the com- 

 bination of those other two primaries which yel- 

 low is not; if we look away from blue, we shall 

 be conscious of orange. Some Ingenious pictures 

 were published a few years ago called " Ghosts." 

 One looked for half a minute steadily at a 

 green rose with red leaves, and turning his head 

 smartly looked Into some shadowed corner, 

 where after a few seconds, a phantom rose, of 

 normal color, duplicating the form that he had 

 impressed upon his eye, appeared, sometimes 

 with surprising clearness. In the same way, the 

 picture of a sheeted figure in black became a 

 ghost in white when the observer looked away 

 from the plate, and off into a darkened room, 

 while a figure In white repeated itself In black 

 against a white wall. These experiments ac- 

 count for a good many supernatural appearances, 

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