PHOTOGRAPHIC PROCESSES. 



several of those small pitchers in hot water ; as you 

 empty one you can be filtering more while you use 

 the others. The small pitchers are for flowing out. 

 Have your plates cleaned as described hereafter, and 

 have them about as warm as when you varnish. 

 Hold the plate with your left hand, the long way to- 

 wards you, pour some emulsion on the centre of 

 plate, let run to the farther right-hand corner, then 

 to farther left hand-corner, then to corner you have 

 hold of, and off at the nearest right hand corner ; 

 leave sufficient on the plate to make a rather opaque 

 film. Prac-tice will guide you how thick to have 

 them. If they come out too intense, you have too 

 much on : if too thin, you have not enough on. Move 

 the emulsion on the plate until it is smooth, and then 

 place upon screw-eyes as described hereafter. When 

 you have six flowed, the first one will be ready to put 

 upon a rack to dry. As soon as a plate is coated it 

 must be put in a dark place to dry not even a red 

 light should get to the plates after they are flowed. 

 The place you put them to set should be shaded from 

 all red or white light ; a dry plate on a negative ex- 

 posed for five minutes to a red light will make a 

 transparency ; so, of course, will fog if exposed too 

 long to red light in making and drying. The plates 

 will dry in a few hours and are ready for use. 



The alcohol and albumen are added to hasten the 

 setting and drying, and also to aid in the flowing. 

 Gelatine with albumen flows more readily than gela- 

 tine alone ; the albumen also helps to keep the silver 

 in suspension in the gelatine. 



