HISTORY AND PROGRESS. 



91 



pole of the latter being to earth.. The line wire w ends 

 in a spiral of insulated wire fastened to a style, G, with blunt 

 platinum point and insulated handle. 



Line 



I I I 

 I I I I 



I I 



Fig. 46. 



This apparatus is intended to replace the key. In order to 

 transmit a message with it the operator takes the insulated 

 handle in his hand and scores the point with an uniform 

 speed over the signs of the letters, one after the other, which 



