144 nature's dfctraclcs. 



I claim as my invention the art of transmitting vocal 

 sounds or conversations telegraphically through an electric 

 circuit. 



This specification was accompanied by cuts 

 of the transmitter and receiver connected by 

 a line-wire and showing one person talking to 

 the transmitter and another listening at the re- 

 ceiver. These cuts may be seen in various 

 books on the subject of telephony. 



