196 PICTURING MIRACLES 



may show many new things of great interest. Under 

 the microscope I have just taken a picture showing 

 the change of color from green to red of the chlo- 

 rophyll grains in a leaf cell. It shows them dying, 

 gathering into a round mass and turning red. It is 

 one scene illustrating autumn leaves which I also 

 have turning from green to red in front of the cam- 

 era just as they do on the trees. Many things of that 

 kind are possible if one has the patience. 



The Stencil method of coloring reached its per- 

 fection a few years ago by Pathe in Paris. I bought 

 from the New York branch two of the machines. 

 They could not use them successfully in America, 

 lacking the skilled operators and patience required. I 

 remodeled both machines, adding labor-saving de- 

 vices, and finally got so we could do it efficiently. 

 The method is complicated. An enlarging camera 

 projects an image of each picture on a ground glass 

 three times the size of the original. You sit at a 

 bench, the image in front of you, and with a needle 

 on the long arm of a pantograph follow the outline 

 of each part of the subject. The other end of the 

 pantograph is an electric needle that vibrates up and 

 down sixty times a second, cutting an opening in a 

 piece of blank film just the size and shape of the 

 original. Turning a crank brings another frame and 

 a new blank piece of film into view. 



