476 Mr. W. H. Preece on Signalling iciihout Wires. [June 4, 



It has been said tLat Mr. Marconi has done nothing new. He has 

 not discovered any new rays ; his transmitter is comparatively old ; his 

 receiver is based on Branly's coherer. Columbus did not invent the 

 egg, but he showed how to make it stand on its end, and Marconi has 

 produced from known means a new electric eye more delicate than 

 any known electrical instrument, and a new system of telegraphy that 

 will reach places hitherto inaccessible. There are a great many 

 practical points connected with this system that require to be 

 threshed out in a practical manner before it can be placed on the 

 market, but enough has been done to prove its value, and to shovv 

 that for shipping and lighthouse purposes it will be a great and 

 valuable acquisition. 



[W. H. P.] 



