LANTERNS. 



are provided with heavy black-cloth curtains which may 

 easily be raised to adjust the fixtures within, yet shut 



C 



Fig. 8, 



in the light when allowed to hang free. The con- 

 denser consists of three lenses, the front one being five 

 inches in diameter. This is shown in the cut (Fig. 8) 



Fig. 9. 



of the transverse section of it. The objective repre- 

 sented is also compound. This form of lantern is made 



