170 Management of Light in Illumination. 



the external appearance of this wall-illuminator^ and 

 of the effect it must produce when Hghted. 



When it is hung up against the wall, a bracket of an 

 elegant form appears to project horizontally about six 

 inches from the wainscot, and a flambeau to be attached 

 to its extremity, in such a manner as to remain sus- 

 pended in a vertical position. On the upper end of 

 this flambeau is placed a screen, in the form of a basket, 

 6 inches in height and 9 inches in width above, formed 

 of ten vertical ribs of wire, covered with white crape, 

 and ornamented with two handsome gilt handles. The 

 ribs of this basket are covered with small diamonds of 

 cut-glass. 



As the bracket, which appears to be made of wood, 

 is painted of a dark bronze colour, and the flambeau is 

 so painted and japanned as to represent white porcelain 

 richly gilded, these two objects do not appear to have 

 any farther connection than that one of them is sup- 

 ported by the other. They are, however, very nearly 

 connected ; for the bracket, which is made of tin and 

 hollow, is a reservoir from whence the lamp is supplied 

 with oil. 



The opening by which the oil is introduced is on 

 the upper side of the bracket, and near its broad end, 

 which is near the wainscot or wall of the room ; and 

 this opening is closed by a brass stopper, perforated at 

 its centre, and covered by a hollow truncated cone, 0.8 

 of an inch in diameter below, 0.3 of an inch in diameter 

 above, and i inch in height. This cone is closed 

 above by a screw, similar in all respects to those used 

 to close the passages for the air in the circular reservoirs 

 of the illuminators. 



There is a small circular reservoir for the oil, which 



