CHAPTER VIII 



PHOTOGRAPHIC LANTERN PICTURES BY THE WET PROCESS. 



slides made by the wet process are 

 certainly easier to produce than those made by 

 any dry method. It is a matter of opinion 

 whether these are better in quality than their rivals on 

 gelatine, &c., and I know that many believe that a far 

 better effect is producible upon a wet plate than upon a 

 dry plate. I myself am of the contrary opinion ; but still, 

 as there may be many who may be inclined to try the old 

 collodion method, my work would be incomplete if I did 

 not give directions by which such slides can be produced. 



If the negatives are of the same size as the lantern 

 plate ; that is to say, if they consist of quarter plate nega- 

 tives, they must be reproduced by contact ; and actual 

 contact with a wet collodion film is of coarse out of the 

 question. 



There is a method by which this difficulty can be ob- 

 viated. Attach to the negative a couple of strips of note 

 paper, 3 ~ inches apart ; the collodion film can then rest 

 against these paper supports by two of its edges during 



