HISTORY AND PROGRESS. 



121 



In his apparatus the marks were made upon the paper 

 strip by means of a small circular disc of metal kept revolv- 

 ing in a dish of coloured fluid, and pressed gently against 

 the paper, when the armature of the electro -magnet was 

 attracted. Beyond this, all the rest of the Morse arrange- 

 ments of clockwork, &c., remained unaltered. The object of 

 the invention was solely to diminish the force necessary for 

 marking the paper, so that the electro-magnets might be 

 able to work the beam when inserted directly in the line. 

 And in this the method has signally succeeded, as the almost 

 universal adoption of modifications of it has proved. 



The apparatus, as constructed by the inventor, was by 

 no means a piece of elaborate workmanship, nor were his 



Tig. 66. 



arrangements of levers and paper- guides quite so commodious 

 as were desirable, but the happy fate of the Morse system is, 

 probably, in no slight degree indebted to this idea. 



In Fig. 66 the clockwork is left out. E is the electro- 



