Management of Light in Illumination. 169 



CHAPTER III. 



Description of an elegant Illuminator for ornamenting 

 the Sides of. a Looking-glass. Additional Obser- 

 vations respecting the Use of Ground Glass. It is 

 very useful in some Situations for glazing Windows. 

 Pendulous Illuminators may be made of various 

 Forms. The Domes of Table Illuminators may be 

 made of Ground Glass, and beautified in various 

 Ways. 



IN decorating spacious apartments for balls and assem- 

 blies, it may sometimes be desirable to ornament 

 the looking-glasses by placing lights on each side of 

 them. Where this is to be done, I would recommend 

 an illuminator I lately had made for that particular 

 purpose, that produces a very fine effect ; and which is 

 not liable to any of those accidents to which lamps 

 in general are exposed. Its construction is extremely 

 simple, and its form is elegant and pleasing, and it has 

 so little of the appearance of being a lamp that it is 

 not easy to discover where any considerable quantity of 

 oil can be concealed. Only one of them has yet been 

 made, and that is in my house at Auteuil, near Paris ; 

 but all those who have seen it have thought it very 

 beautiful, and I have no doubt of its meeting with 

 general approbation ; and, as it can be afforded at a 

 lower price than any lamp hitherto constructed for the 

 same purpose, it can hardly fail to get soon into com- 

 mon use. 



The following descriptions will give a general idea of 



