TICUreleas Cele0rapbp. 181 



telegraphy, history shows that he invented 

 none of the essential elements so far as the 

 system has been made public. 



What he seems to have really done was to 

 substitute the coherer of Branly and Lodge, 

 with its adjuncts, for the telephone of Dol- 

 bear. There is no doubt but that Marconi has 

 done much to improve and enlarge the capacity 

 of the apparatus and to demonstrate to the 

 world some of its possibilities. He has been 

 an indefatigable worker and deserves great 

 credit ; but without the work of those who pre- 

 ceded him he could not have succeeded : the 

 honors should be divided. 



This system has been used at various times 

 for reporting yacht-races, and between ships. 

 It is said also to have been used to some ex- 

 tent in the South African War. There is 

 much to be done yet, however, before it can be 

 made entirely reliable for defensive work in 

 time of war. As it is now, all an enemy would 

 have to do to destroy its usefulness would be 

 to set an ether-wave-producer to work auto- 

 matically anywhere within the "sphere of in- 

 fluence" of the system to speak diplomat- 

 ically when it would render unintelligible 

 any message that should be sent. To make 

 the system of the greatest value some sort of 

 select ; IT imi-t be invented that will 



select signals sent fnun a transmitter that is 

 u r ned to work with it. 



