LIGHT. 85 



Pepper's Ghost is but a reflection from the surface of 

 unsilvered glass. His fixtures were made upon a large 

 scale, were costly, and not practicable in every place. 

 His reflectors were large sheets of glass about five feet 



fig. 6. 



broad and six feet high. The light was a powerful 

 lime light. Fig. 62 will give an idea of the conditions 

 employed last year in his traveling lectures. The front 

 of the stage s s was heavily curtained, except a space 

 of a few feet in the middle of it, where there was a 

 recess opening back, and apparently to the back of the 

 stage c, which could be seen through a large plain glass 

 reflector g, twelve or fifteen feet long and six feet high, 

 placed at an angle of about 45. This glass is seldom 

 noticed unless one is looking for it. The lantern for 

 illuminating the ghost b is behind the curtain on the 



