222 SUPER-ORGANIC EVOLUTION 



Let us examine now the scale of vibrations of 

 the solar spectrum, including the visible and in- 

 visible part, which is outside the red on one side, 

 and the action of which produces heat instead of 

 light, and that which is outside the violet, the mode 

 of whose vibration does not allow of its appearing 

 coloured, but which makes itself felt as chemical 

 energy. 



The unity employed is ten-millionths of a 

 millimetre : 



th 



the Wave. 



Beyond the red .. . . . 1940 to 734 



Extreme limit of the red . . . 734 400 



Limit between the red and the orange 647 490 

 between the orange and the 



yellow .... 587 558 



between the yellow and the green 535 590 



between the green and the blue 492 596 



between the blue and the indigo 456 675 



between the indigo and the violet 424 700 



Extreme limit of the violet . . 397 756 



Beyond the invisible violet . . 397 to 295 



sufficient for our explanation, with regard to 

 light and sound, in order to make clear our proposi- 

 tion ; that is, that there exist rhythms, in colours 

 and sound, of which the senses of sight and sound 

 are conscious, and other rhythms, like those in the 

 invisible spectrum, beyond the red and the violet, 

 that exist, though not consciously perceptible, 

 but whose influence is positive. As we shall 



