140 PHOTOGRAPHIC FACTS AND FORMULAS 
grains of silver nitrate have been added. This gives a brown- 
ish-black image. By applying a hydrochinon developer, a 
reddish image is obtained, and rodinal gives a brown. After 
intensification, the negative or print should be well washed 
in water. Both bleaching and redevelopment should be car- 
ried out in bright daylight. This is very rarely used and 
presents no particular advantages. 
Dye INTENSIFICATION.—Partially bleach the images in: 
Potassium ferricyanide 0.34 g 
Ammonium bichromate 0.068 g 
Glacial acetic acid 8.5 ccm 
Water 1000 ccm 
Then wash, and immerse in: 
Victoria green 0.26 g 
Safranin 0.52 g 
Glacial acetic acid 8.5 ccm 
Water 1000 ccm 
2:5 gt. 
0.5 gr. 
64 min. 
16 oz. 
1.25 gr. 
2.5 gr. 
64 min. 
16 oz. 
Dye for 30 to 120 seconds and wash for 5 minutes. 
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