The direct photographing of the colors themselves will be much simpler as soon as the method is completely perfected.

It can hardly be said that this ideal has been reached today.

The successive photographing through three red, green, and violet screens and the later projection of the pictures through screens of these colors seemed scientifically the best approach.

Yet it needed a multiplication of pictures per second which offered extreme difficulty, besides an extraordinary increase of expense.

The practical advance seems more secure along the line of the so-called "kinemacolor." Its effects are secured by the use of two screens only, not quite satisfactory, as true blue impressions have to suffer and the reddish and greenish ones are emphasized.