WIEELESS TELEPHONY FESSENDEN. 195 



This fact has been repeatedly determined by sending between Brant 

 Rock and Brooklyn on the same frequency, using in the one case 

 spark-produced trains of waves and in the other the high-frequency 

 dynamo. The difference in the falling oif for the same frequency 

 and energy is very great, but further work is necessary before any- 

 thing very definite can be said about it or the reasons finally deter- 

 mined. * * * 



[Mr. Fessenden concludes his article Avith a discussion of the diffi- 

 culty of securing governmental authority and legislation for the 

 development and operation of wireless telegraph systems by private 

 corporations.] 



