ON ILLUMINATtOfJ. §-^ 



meter at tbe top at its openings, and 5 inches in height. Theijestrlptibtfof 



hoop of crape which surrounds the lamp should be 8 inches^- lamp by > 



' ^ T • 1 1 Count Ruitt- 



iiT diameter and 3^ inches in breadth. If it be desired to navefgrd. ■ ' . 



more light upon the table, and less in the room, the conical re- 

 flector which covers the lamp above may be made of a thicker 

 stuff, or even of tin, painted white within, and painted and 

 varnished without. 



To light a large drawlng-room, or dining-room, a suspended 

 lamp with six wicks may be used, with a reservoir of oil 18 

 inches in diameter within, 2^ inches in breadth, and -j-^ of an 

 inch in depth, surrounded by a hoop of crape 6 inches broad. 



Such a lamp, hung at the height of 8 or 9 feet in the middle 

 of a large room, would be found to diffuse a very gentle and 

 agreeable light. 



It is almost superfluous to observe, that the general form of 

 this lamp is simple and elegant ; and that it is susceptible of 

 being easily ornamented, a circumstance which is of real im- 

 portance in this age of refinement, and even in every age in 

 which the sentiment of beauty has any influence on the man- 

 ners and happiness of mankind. 



N.B. The openings of the tubes above, which contain the , 



wicks, are situated one quarter of an inch above the level of 

 the oil in the reservoir, when the reservoir is full. 



PLATE I. 



Fig. 1. — Horizontal projection. 

 </. Hoop that serves for reservoir of oi). . - 



€. Tubes that convey the oil from the reservoir to the 



cylinders. 

 f. Cylinders, 



a. Brass stoppers, with their screws. 

 ^. Brass hoop which serves to receive the lamp. 

 yi. Arrows attached to the brass hoop : to these arrows 



the chains are fixed. 



Fig. 2. — Vertical projection. 

 d. Hollow hoop that serves for reservoir of oil. 

 t. Tubes that convey the oil from the reservoir to the 



cylinders. 

 f. Cylinders, with their chimneys. 

 a* Brass, stoppers, with their screws. 



g. Brass 



