6o 



SOME AMERICAN MAGIC LANTERNS 



[CH. I 



FIG. 33. SIMPLE MAGIC LANTERN WITH A TWO-LENS CONDENSER. 

 (Model C, Balopticon; Cut loaned by the Bausch & Lamb Optical Co.}. 



Fn;. 34. MAC, ic LANTERN OF THE LATHE-BED TYPE WITH A THREE- 

 LENS CONDENSER AND WATER-CELL. 



(Model D, Bal optic on; Cut loaned by the Bausch & Lomb Optical Co.). 



