APPLICATIONS OF THE ELECTRIC LIGHT. 259 



electric machines suitably arranged for that purpose, can supply 

 50 regulators. 



" The illumination of the Lyons railway station last year was 

 supplied by one of my electric generators yielding 12 currents, 

 each current maintaining 2 or 3 lamps. The new apparatus 

 I am now fitting up will allow of 4 lamps being inserted in each 

 current. 



"At the Saint-Lazare station each current supplies 2 or 4 

 lamps, the intensity of which is 'regulated according to the re- 

 quirements of the service." 



Application to the Illumination of Lighthouses. 



We are now no longer in the region of hypotheses, the 

 application of the electric light to lighthouses being a fait 

 accompli for more than fifteen years (1864), and I am not 

 aware that any serious accident has interrupted the experi- 

 ments. Most of the important lighthouses on the coasts of 

 France, Russia, and England are thus lighted ; and it is to 

 the bold enterprise of the Alliance Company and its intelli- 

 gent director, Berlioz, that the civilized world owes this 

 beautiful application, which has certainly prevented many 

 maritime disasters. It is true that Berlioz has been ener- 

 getically assisted in his experiments by the Lighthouse Ad- 

 ministration, and among others by Reynard and Degrand, 

 who, after many intelligent experiments, arranged the light- 

 houses of La Heve on this new system towards the end of 

 1863. Some time afterwards England imitated us, and em- 

 ployed the electro-magnetic machines of Holmes, which were 

 merely an inferior copy of those of the Alliance. Le Roux 

 has published in the Bulletin de la Societe d^ Encouragement a 

 very interesting paper on this kind of application, and we 

 should have had great pleasure in reproducing it here had 

 space permitted, but we shall give merely a summary of it, 

 referring the reader to tome XIV. of the Bulletin de la Societe, 

 p. 762. 



At the present time, dynamo-electric macnlnes appear to 

 be preferred, and the Telegraphic Journal in the number of 



17 2 



