I2 4 



PHOTO-TELEGRAPHY 



ance of the carbon balls, Belin proposes to telegraph 

 pictures over long distances with his modified appa- 

 ratus, using a Blondel oscillograph of heavier type 

 as regards field magnets, and a lighter suspension 

 for the mirror. This could be turned through a 

 greater angle for a given current if the wires to 



FIG. 56. Photograph transmitted by M. Belin's Telestereo- 

 graph, over an artificial line. 



which it was attached were increased in length and 

 their tension lessened, but the period of swing 

 would be greater. 



M. Belin has obtained some good results with 

 his system, an example of which Is shown in 

 Fig. 56. The results are, however, characterised 

 by a soft diffused appearance, which is not always- 



