THE TELEGRAPHIC 

 TRANSMISSION OF PHOTOGRAPHS 



CHAPTER I. 



ATTEMPTS AT THE SOLUTION OF THE TELE- 

 GRAPHIC TRANSMISSION OF PHOTOGRAPHS 

 AND PICTURES. 



THE problem of transmitting a sketch or photo- 

 graph over a distance by means of electricity has 

 occupied the minds of many engineers and scientists 

 for the past sixty years, but it has been up to the 

 present time a singularly ungrateful task, owing to 

 the lack of possible application. The tendency for 

 modern journals to be illustrated with photographs 

 has very greatly widened the scope for an instru- 

 ment by which they can be " wired/' and it is pro- 

 bably for this reason that so much attention has of 

 late been devoted to this new science. 



It seems difficult on first thought to conceive how 

 a picture can be telegraphed. But a picture, just 

 like a written message, can be split up into com- 

 ponent parts ; the letters forming a 'word have a 

 distinct meaning when seen assembled together in 



P.T. B 



