MUSIC AND THE DRAMA. 195 
of the carriage along with the feeding-pipe, and consists of four shanks, 
SF 9%, which are connected together by perforated air-tight joints. When 
the carriage is drawn back, as here represented, the shanks lie close 
together; but when it is pushed forward, they form a right line. A very 
similar contrivance is applied to the great chandelier, being placed above 
the ceiling of the spectatory, so that the chandelier can be raised for the 
purpose of lighting the lamps, and then lowered again. The intensity of its 
light is constantly the same with that of the stage-lghts ; for the gas comes 
toit only as regulated by the superintendent. The lamps employed for light- 
ing the stage overhead are fixed like the foot-lights. Movable lights are 
inclosed in cases, as shown in jig. 24, which represents the section of such 
a case. The case is suspended at e, and has at a and d a disk of glass, by 
means of which the light can also be colored. The lamp 6 receives its gas 
through a flexible caoutchouc or gutta percha pipe. The light of the wing- 
lamps is colored, as represented in jig. 25, by a turning-shade f, which is 
colored alternately green and red, the proper color being brought before 
the flame of the lamp by raising the whole shade. Gradations of color are 
obtained by turning the shade more or less forward. 
572 
