Xll INTRODUCTION. 



beautiful in nature and art. Literature and the sciences 

 teem with pictorial illustrations, from which choice se- 

 lections can bo easily copied for lantern slides. And 

 now the Sciopticon, with its own peculiar light for all 

 ordinary occasions, and with the oxy-hydrogen light for 

 occasions extraordinary, comes in to show up what is 

 thus made ready. 



In form and construction the Sciopticon is very unlike 

 that relic of the middle ages, the old magic lantern. 

 Those who are interested in the philosophy involved in 

 it, in the peculiarities pertaining to it, in the practical 

 management of it, in making and selecting slides for it, 

 in performing scientific experiments with it, and in pro- 

 moting the interest of education by it will do well to 

 inquire within. 



