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iSyy.] Recent Advances in Telegraphy . 
In these, each letter of a word is on an average composed 
of three distinct signals ; but in the articulating telephone 
a whole word is transmitted by the single a 6 i of uttering it. 
Mr. A. Graham Bell, the inventor of this now-famous 
instrument, is, we believe, a native of Edinburgh, and is 
now a Professor of Boston University, and a naturalised 
citizen of the United States. In December last he patented 
it in England. 
The articulating telephone consists of two distinct appa- 
ratus, a sender and a receiver. Fig. 17 represents the 
sender, and Fig. 18 the receiver: they are both exceedingly 
simple. In the sender, m m are two coils of insulated wire 
