THE BOOK OF THE LANTERN. 



239 



I have already indicated how this work of enlarging 

 can be done with an ordinary optical lantern, so long as 

 the size of the negative is not above that of a lantern 



FIG. 60. 



slide. For larger negatives it is far better to use a proper 

 enlarging lantern of the type shown at fig. 60. 



