INTRODUCTION. IX 



as is desirable in such slides as the Ascension. The reverse 

 movements bring into view gradually the " Soldier's 

 Dream," " Angel of Peace," etc., nearly as well as with 

 two slides in the dissolving lanterns. All the appearances 

 formerly produced by colored glass in the form of glass 

 slides are better effected by these tinters. If at any time 

 the rods become too loose, the stop screws may be tightened. 



13. The Wooden Base is peculiarly suited to sup- 

 port the several parts and allow of their free and precise 

 adjustments, and to break the metallic conductions. The 

 claw (ra) and the flange (n) hold it securely to the top of 

 the carrying case, when the apparatus is in use. 



14. The Sciopticon is an Original and an 

 Honest Lantern. Its materials are what they seem 

 and what the purposes require. It took shape to effect the 

 ends in view, without regard to precedent, or sacrifice to 

 ornament. It is tidy and snug, and its beauty is in its fit- 

 ness. It was awarded the highest premium by the Judges 

 at the late Franklin Institute Exhibition, who reported as 

 follows : 



" The Sciopticon with two Coal OH Flames. This lantern 

 originated with Mr. Marcy, and" gives the best light, in 

 every respect, yet derived from oil. Portability, compact- 

 ness, freedom from excessive heat, and that unusual peculi- 

 arity of precisely answering its intended purpose" are among 

 its special properties. 



The Centennial Jlfedal has been Awarded to 

 this, as also to the Lime-light Sciopticon, with Diploma 

 corroborating its claims 



