PREPARATION OF LANTERN SLIDES 



[Cn. VIII 



Any one who can make a good negative and a good paper print 

 from it can make a good lantern slide. The lantern slide is a 

 positive and the lights and shades should appear as in the object 

 when one looks through the slide toward the light. These lantern 

 slides are small transparencies, and some of them make beautiful 

 ornaments when used as transparencies in a window. 



There is more danger of getting the slides too opaque than not 

 opaque enough. The beginner should try each lantern slide with 



FIG. 117. COPYING, ENLARGING OR REDUCING CAMERA. 



(From the Catalogue of Anthony & Co.). 



The objective. The bellows have been cut away to show it. 



/ Front of the camera with frames or "kits" for negatives of various sizes. 

 For making enlargements with this camera the objective can be placed in the 

 front . 



a moderate light in the lantern. If the picture on the screen is 

 brilliant and shows all the details with the moderate light, it will, 

 of course, give a more brilliant picture with the electric light of 

 3000 to 4000 candle-power. If the slide is too opaque, it will not 

 come out well with the moderate light and, while the powerful 

 electric light may show it fairly well, so much radiation will be 

 absorbed and transformed into heat that the slide is liable to break 

 if left in the lantern a considerable time. The more transparent 

 slides allow the radiant energy to pass through them and naturally 

 they are not so greatly heated. 



