28o ELECTRIC LIGHTING. 



prevents the very dark shadows which would be cast by the 

 packages. By the adoption of this method, it has been 

 found possible to reduce the number of men on the staff for 

 night services, and the number of small articles lost has 

 been much diminished. E. Reynier has improved this system 

 by making the reflecting apparatus and the lantern which 

 causes the regulator much easier to manage. In his arrange- 

 ment the apparatus is moved like the suspenders in a dining- 

 room. We have not space here to give the details of this 

 interesting arrangement, but we shall, at a later period, pub- 

 lish a more complete description. 



The Gramme Company has also fitted up for the shops of 

 the Louvre a luminous ceiling, which has proved equally 

 successful. The ceiling is formed in the first place of a large 

 plate of ground unsilvered glass, which constitutes the base 

 of a large hollow pyramid of tin-plate intended to act as the 

 reflector ; an electric light regulator suspended and balanced 

 by a counterpoise is placed within this pyramid, so that the 

 reflected rays may be thrown as uniformly as possible on the 

 ground glass. A second reserve regulator can, moreover, 

 be readily substituted for the first one when the carbons have 

 to be renewed. 



The light reflecting system, used at the goods station of 

 the Chemin dufer du Nord, has been employed at Vienna to 

 illuminate a skating rink 133 metres long. Two Gramme 

 machines and two Serrin lamps, above which were hoisted 

 jarge reflectors of elliptical curvature, were enough to light 

 up the rink splendidly. This is the most successful of open 

 air applications. 



Splendid electrical illuminations have recently been pro- 

 vided at the picture exhibition in the Champs-Elysees at 

 Paris, and at the exhibition of electric light apparatus at the 

 Albert Hall, London. The former have been produced by 

 Jablochkoff candles, the latter with these candles combined 

 with Siemens' lamps. The results, although leaving room 

 for some improvement as regards the steadiness and the 



