DEVELOPING-OUT PAPERS 205 
Water 1000 ccm 16 oz. 
All formulas given under Bromide Paper are applicable to 
development papers. 
Non-ABRASION DEVELOPERS.—Glossy development papers 
are likely to show black hair-like lines, due to abrasion of the 
sensitive surface. The following has been suggested as 
obviating these: 
Metol a0 2 27 gr. 
Hydrochinon 6g 46 er. 
Sodium sulphite, dry 12¢ O2\er: 
Sodium carbonate, dry 20 g 154 gr. 
Potassium bromide 0.4¢ 3 gr. 
Potassium iodide Tate 15.4 gr. 
Water 1000 ccm 16 oz. 
The iodide is the active agent and may be added in about the 
above ratio to any developer. Or add 0.156 per cent of hypo 
to the developer, that is, 1.56 g per liter (12 gr. per 16 0z.). 
Pyro DEVELOPER FOR WARM Brown Tones oN DEVELOP- 
MENT PAPERS.— 
A. Potassium metabisulphite 5g 38.5 gr. 
Pyrogallol 22s 169 gr. 
Potassium bromide I5¢g Listen: 
Water 1000 ccm 16 oz. 
B. Sodium sulphite, dry 87.5 g 672 gr. 
Sodium carbonate, dry 87.5 672 er 
Water 1000 ccm 16 oz. 
For use mix A 10, B 20, water 70 parts. The image appears 
in from 30 to 40 seconds, and development is complete in 3 
or 4 minutes. The prints should be fixed in an acid bath 
without intermediate washing. 
Vitava (Kopak) PaPEer.— 
1. Elon (metol) 6.5 ¢ 100 gr. 
Sodium sulphite, dry 100 g 3% oz. 
