138 Management of Light in Illumination, 



Their reservoirs are always painted white and ja- 

 panned ; and if the hoop which supports the reservoir 

 and its six projecting arrows were also painted white 

 and ornamented modestly, by gilding the two borders 

 of the hoop and the feathers of the arrows, the illumi- 

 nator would perhaps be quite as beautiful as it now is, 

 when this hoop and its arrows have the appearance of 

 burnished gold. 



A considerable expense might be saved, without 

 occasioning any considerable inconvenience, by sus- 

 pending all pendulous illuminators by metallic rods, 

 instead of suspending them by means of cords passing 

 over pulleys. 



Small pendulous balloon illuminators, with one single 

 burner, have lately been introduced at Paris ; and they 

 light a boudoir or any , other small room in so very 

 elegant a manner that they deserve to be just men- 

 tioned. Their circular reservoirs are I2f inches in 

 diameter on the outside, and about i^ inch in width; 

 and their balloons are ornamented with cut glass. 

 When the hoop, which supports the reservoir, and its 

 six arrows are made of strong tin, painted of a bronze 

 colour and varnished, this illuminator is sold for 

 80 francs. They are suspended at the height of about 

 6|- feet above the floor ; and, as the surface of the bal- 

 loon is very large in proportion to the quantity of light 

 by which it is rendered luminous, the light it diffuses 

 is very mild, and the balloon may be viewed without 

 any injury to the eyes. 



Several pendulous balloon illuminators with two 

 burners have also been constructed, which have been 

 sold as low as 120 francs. 



